I'm kinda picky, but only because good beer is pretty easy to come by here. I'll have to look for Kiltlifter if it's available here. I'm really into Belgian ales, especially Ommegang. I also love Chimay, and I rarely dislike a porter or stout.
I had a few bad hangover experiences with Killian's (not really Irish) in the 90's--actually didn't know it is still around--and have generally avoided red beers ever since. Icehouse is on a par with Schlitz for me, though I originally associated it with that 80's Brit band called Icehouse. Remember them? "Well you've got to be crazy to love a guy like me..." Then again, you might be too young. They weren't around for long.