In all seriousness though, it varies by state. Where I live (Indiana), it's not illegal to give alcohol to people under 21; they just can't buy it themselves. Supposedly it's illegal to handle alcohol before it's been bought (?), but I've never seen or heard of this being enforced on anyone.

As for my favorite type of beer, I can't really say; because of the aforementioned law against selling alcohol to minors I'm limited to the selection of my parents and older siblings. Corona seems pretty good, but we import that from Mexico.

EDIT: I almost forgot to mention: Vodka is pretty good (although it's not beer) when it's combined with cranberry juice, although I could never drink it without the juice... there's just not enough flavor otherwise.