Pilsner Urquell. The original Pilsner beer, brewed in Plzen, Czeckoslovakia since 1842. Still the best commercially brewed beer I know of. Rich and creamy smooth. If you live in the southeastern US, Publix food stores have it in their catalog and some of them carry it. They do if they're in my neighborhood. If you're fortunate enough to find it on draft, do try it.
It's even better when chasing a shot of frozen Chopin vodka down your throat.