Surely you jest - Flick was one of the most exciting receivers to watch when in his prime - of course he’s remembered. Not many receivers have three 1000+ seasons, out of seven seasons total.
Sadly, his career ended with an injury while with the Riders - the infamous 2008 campaign where at one point the Riders had about 20 players on the injury list, several of them with broken legs, including Flick.
Adam Carolla went to my high school, in fact he was either in the same class as me or the one right after. I forget which. But his picture as a teenager is in my yearbook.
As for college, there have been many famous people who went to Caltech. Perhaps the most famous alum is William Shockley.
College (TESC): Matt Groening (Michael Richards attended, but I don’t know if he graduated.)
George Mason University (undergrad) probably Alec Baldwin
University of Virginia (grad): Tina Fey (weird 30 Rock connection in my schools); Robert Kennedy, Ted Kennedy, Katie Couric; Walter Reed; Samuel Goldman; Woodrow Wilson and Janet Napolitano.
Trinity College Dublin : - Samuel Beckett, Edmund Burke, Oliver Goldsmith, Oscar Wilde, the list is pretty much endless.
And I was in secondary (I think high to Americans ? ) school with Padraig Harrington and Paul McGinley, the golfers.
Keira Knightley went to my sixth form college.
A bunch of people who graduated from the University of Manchester are well known. Wittgenstein and Alan Turing are maybe the most famous.
Both HS (Central HS of Philadelphia) and college (University of Pennsylvania): Noam Chomsky.
The most famous person in my HS class (202nd) is the Oregon Symphony conductor James Anderson DePriest (nephew of Marion Anderson).
Binghamton Central High School Rod Serling
It’s only fair, I suppose, to mention that as far as I can determine online, and with no better memory to assist, the only “famous” people from my high school have been football players! I can only hope that somebody accomplished something more than that.
As for college, I’m going to defer to your judgment as to who is the “most famous” of this crowd: Notable faculty and alumni or List of Vanderbilt University people but I’m having a hard time choosing between Al Gore, Willie Geist, and Dinah Shore. (If I haven’t said so before, I never did graduate from Vandy, so I couldn’t even make my own list, even if I did become famous for something. 
)
High school is probably Ernie Eves, former Premier of Ontario.
Nobody really stands out in the Notable Alumni section of my college’s wiki. Patricia O’Connor is a recipient of the Order of Canada and a founding member of the Canadian Association of Aero-Medical Transport.
There’s never been anyone close to famous who came from my hometown in Eastern Washington, so High School is “none”.
College–probably John Stockton, the basketball great who played with the Utah Jazz. Bing Crosby was undoubtedly our most famous alumni, but he quit before his senior year to start his music career.
I went to Hollywood High school in Los Angeles.
Famous graduates include, but are not limited to:
Meredith Baxter
Carol Burnett
Keith Carradine
Lon Chaney, Jr.
Cher
Warren Christopher
Laurence Fishburne
Judy Garland
James Garner
Barbara Hershey
John Huston
Chuck Jones
Sarah Jessica Parker
John Ritter
Mickey Rooney
Lana Turner
and Fay Wray
They sort of pounded how awesome our alumni were into us while we were there. Telling us stories about how the famous story about how Lana Turner was discovered happened while she was cutting class etc. I think it was supposed to be inspiring. Didn’t quite work that way though.
I went to UCLA for undergrad and there are a lot of famous names that came out of that school so I won’t list them.
Oops, forgot to mention my college was Gonzaga University.
He might be the most famous, but having the guy who invented the Slinky is way cooler.
The most famous person I actually had a class with was Ann Coulter. Creative Writing class.
She was heavy and had bad skin. Very conservative, even then.
Western Michigan University:
John Saunders (ESPN/ABC Sports)
Greg Jennings (Super Bowl hero for the Green Bay Packers)
Dennis Archer (Former mayor of Detroit/former president of the ABA)
I’d say most famous would be James Gandolfini, and there’s also Milton Friedman and Janet Evanovich.
Rutgers University
Bolles (high) School: Chipper Jones. About 9 years my junior.
University of Florida: must be tons, had to Google up some lists to choose-as “finalists” of sorts I’d have Buddy Ebsen, Steve Spurrier, and Bob Graham.
High School (Derryfield School, Manchester NH): Sarah Silverman
University (Washington University): A whole bunch. Peter Sarsgaard, Harold Ramis, Steve Fossett, Phyllis Schlafly, among others. Tennessee Williams attended, but quit when he didn’t win some poetry prize or something. Robert Guillaume left to study opera (which I find amusing because I studied opera there). Marilyn Vos Savant allegedly dropped out because she was bored.
High School (around the time my parents were there), Gil Santos, sports broadcaster for WBZ and the “Voice of the New England Patriots.”
High school: the actor who played Mr. Belding on Saved by the Bell.
College (Colby College) - I supposed the “most famous” would depend upon what you’re interested in, but IMO, from this list, I’d go with:
Elijah Lovejoy
Doris Kearns Goodwin
Margaret Chase Smith
Robert Parker