Too many.  Too, too many.  Ah, let's see...well, first bear in mind that I'm a bit of a beer snob.  I will go for days or months without, when cash is low, rather than drink something I do not like.  I'm open-minded and will try new things; I'm not inclined to write something off without a college try.  That said, I can only list a few favorites (plural):
- Gülden Draak - hard to find and $5 a bottle, but deucedly drinkable stuff.  Even at 10.5% alcohol, it's still smooth as silk.  Tied for first with the next one below.
- Weihenstephaner - been around for nearly 1000 years.  Tastes like they really got the hang of it.
- Leffe - affordable and very good tasting.
- Hoegaarden, Sam Adams, Leinenkügel's, Hofbräu - these are some that I find myself buying fairly regularly (i.e. when I have money to keep some around).
  It's not a complete list; like I said, I'm always trying new stuff.