Frank Luger - Barney Miller
Barney Miller - Barney Miller
Martin Crane - Frasier
Gomer Pyle - Gomer Pyle, U.S.M.C.
Dick Loudin - Newhart
Daryl - Newhart
Larry - Newhart
Woody Boyd – Cheers
Eldin Bernicke(sp?) - Murphy Brown
Chandler Bing - Friends
Ted Mosby - How I Met Your Mother
Michael Bluth – Arrested Development
Hawkeye - MASH
GOB - Arrested Development
Trying to be clever, are we?
David Hyde Pierce (Niles Crane)
Don Knotts (Barney Fife)
Carroll O’Connor (Archie Bunker)
Kelsey Grammer (Frasier Crane)
Desi Arnaz (Ricky Ricardo)
Bryan Cranston (Hal)
Shows would be helpful (though obvious in most of these cases), as requested by the OP. 
I would like to watch the show “Niles Crane” with the character called “David Hyde-Pierce” Where can I watch it?
I mentioned in the female characters thread that I didn’t like voting for lead characters vs. supporting characters. But now that we have ten characters to nominate, I’m going to nominate five leads and five supporting, and suggest @Mean_Mr.Mustard set up a lead bracket and supporting bracket, so the two only meet in the final round.
Lead Characters
Andy Taylor - Andy Griffith Show
Barney Miller - Barney Miller
Rob Petrie - Dick Van Dyke Show
Sam Malone - Cheers
Bob Hartley - Bob Newhart Show
Supporting Characters
Ed Norton - The Honeymooners
Barney Fife - Andy Griffith Show
Lou Grant - Mary Tyler Moore
Dr. Johnny Fever - WKRP in Cincinnati
Niles Crane - Frasier
Ok, Mister Smarty-pants, how about this:
Niles Crane (David Hyde Pierce)
Barney Fife (Don Knotts)
Archie Bunker (Carroll O’Connor)
Frasier Crane (Kelsey Grammer)
Ricky Ricardo (Desi Arnaz)
Hal (Bryan Cranston)
Still needs the names of the shows.
From the OP:
- Niles Crane (Frasier) — David Hyde Pierce
- Barney Fife (The Andy Griffith Show) — Don Knotts
- Archie Bunker (All in the Family) — Carroll O’Connor
- Frasier Crane (Frasier) — Kelsey Grammer
- Ricky Ricardo (I Love Lucy) — Desi Arnaz
- Hal (Malcolm in the Middle) — Bryan Cranston