If you're looking for advice, it depends heavily on your setup. How many taps do you have? The more you have, the "crazier" you can get.
For me (two tap kegerator), standard is a crowd pleaser (has to work for the non-craft group as well) and a craft-friendly. Generally the first will be my cream ale (current), wheat, lager or low-hopped APA. Second is often an IPA or seasonal - Oktoberfest, Vienna Lager (current), or stout, for example. Generally the more "extreme" styles (imperials or just less popular or harder to drink) go in bottles. Marginally less convenient at a party, but they stay fresher.