Survivor, of course.
Wish I could be original…but Six Feet Under gets my vote.
Friends
Trading Spaces
Angel
Buffy
ER
NYPD Blue
Conquest, Mail Call, and Hands On History.
Angel
Gilmore Girls
Smallville
and most recently, the old movies on TCM and AMC
If you had asked me 24 hours ago I would have said Buffy, but I guess that’s no longer current. 
So… probably Angel, although its not quite as good.
Six Feet Under - nothing else comes close. This is the only show I watch every single week. Hell, I watch it twice a week if I get the chance. I also like The Sopranos and Sex and the City quite a bit.
As far as network TV, I watch the following on occasion:
Law & Order
ER
The Simpsons
Judging Amy (Yeah, it’s sappy, but I still kinda like it)
Everybody Loves Raymond
and if I’m still awake, I’ll watch Letterman.
Harvey Birdman, Attorney at Law (More episodes! Now, dammit!)
Good Eats
If you get the Nippon Golden Network cable channel, check out Kaiun Nandemo Kanteidan (aka Treasure Hunters). It’s subtitled and resembles Antiques Roadshow, but takes things to the usual Japanese extremes. Celebrities and normal joes bring in their treasures to be evaluated by a panel of antiques and artifact experts (Teruhisa Kitahara, author of many books on classic tin and celluloid toys, is one of the judges). Each treasure is usually accompanied by extensive research clips on its cultural/historical background (assuming, of course, that the item is genuine) and witty commentary from the emcee.
Well, until Wednesday night, “American Idol.”
Other than that, I guess Blue Jays games.
Another vote for Boomtown–we both love it.
I am also addicted to Trading Spaces. 
24, followed closely by The Shield.
Law & Order:SVU, but that’s only because Scrubs was such a disappointment in it’s second season.
CSI, because I like the characters and the “puzzles”. I know it is not a realistic picture of a crime lab, but I like it as entertainment. CSI:Miami however sucks bigtime, and I think it’s mostly because of David Caruso’s “character” who is more like a hard-bitten detective than a scientist. But then, what else can he play?
And Junkyard Wars, especially the British series.
Oh, and Gardening By The Yard because Paul James is as wacky as I am 
Mine would have to be Street Time. It’s with Rob Morrow (from Northern Exposure) and Terrence Howard. Something about the characters speak to me. Caught the first episode of season 2 tonight. Good stuff.
Duh…ALIAS!!!
Every week I’m absolutely mystified about the ratings this show gets! WHY DON’T PEOPLE WATCH ONE OF THE MOST FUN SHOWS ON TELEVISION!
Trading Spaces is all that i can think of that is still being made.
Oh, I forgot about CSI, I like that, too.
Currently I “TiVo”:
The Daily Show
Pardon the Interruption
Howard Stern
X-Play
Scrubs
Nip Tuck (still deciding)
Can’t wait for Sopranos…
HBO is rerunning the entire Sopranos set in preparation for the upcoming 5th season’s premiere, which (I assume – haven’t checked lately) won’t start until after New Year’s. I watch that every Sunday even though I have it all on tape. It’s followed by Sex And The City, which I also watch.
The only other regularly scheduled show on now that I plan for is Big Brother 4.
Other than that, I watch as many boxing shows as ESPN and HBO cover, usually Tuesday, Friday, and sometimes Saturday and Sunday. Also the poker and pool shows, whenever they’re on.
As soon as they’re back on, I’ll try to catch 24, The Shield, Six Feet Under, Survivor, and maybe American Idol. Also, Tennessee Titans and Auburn football.
If I’m still awake for it, I’ll watch Letterman unless it’s a rerun.
There are times I’ll catch the Daily Show, but it’s not a regular thing for me. Also on occasion I’ll see Jeopardy!, Millionaire, and Weakest Link, all of which run opposite local news which I rarely try to watch unless the weather is acting up.
If Austin City Limits has one of my favorites, I’ll watch that. Same for NOVA. But PBS rarely has anything to watch worthwhile unless they’re running a fund-raiser.
I used to try to catch Biography each evening, but they’ve run out of interesting people for the most part. Bravo Profiles has an interesting show now and then. And if it’s not a rerun, I’ll usually try to catch Inside The Actors Studio.
Dinner For Five, Jon Favreau’s 30-minute gig with four other entertainment types, has been fun on occasion, but it’s not on my must see list.
I usually check for movies on HBO, Flix, Sundance, TCM, and then the others (where they’ll interrupt for commercials) to see if there’s anything worth watching, which usually happens maybe twice a week.
Otherwise, TV is for watching DVD’s.