Quoted from Xenon75:
All of the beers in the world you could put on draft and you chose heineken?
I've probably had about 50 different brands of beer in it since I got it but the Dutch lagers are my favorite. Grolsch, Amstel, Heineken get a lot of play as do the German beers. Hard to beat an ice-cold Heiny on tap though.
It should be noted though that American kegs require a different tap. I bought the US style tap too and actually just have a 1/4 keg of Bud in it right now.
I haven't done Guiness or any of the Irish beers that require both nitrogen and CO2 yet though. One of these days I probably will.