I buy Miller Lite for the plastic bottles and Bud if I'm having a party for the people that like that kinda stuff. Every now and then I buy Grolsch for the bottles and hope like hell someone else will drink it. Sam Adams: Double Bock, Winter Lager, Octoberfest and Black Lager. Sweetwater's IPA, Blue, Sweet Georgia Brown and Happy Endings on occasion.
I find the more I brew the less I like commercial beer and it's not the taste they taste the same. It's the deleterious effects of commercial brew that I don't seem to get with homebrew.