I bought License to Ill around the time I graduated from high school, then got away from the Beastie Boys. I heard their newest album, Hot Sauce Committe Part II and liked it, so I started going back and checking out thier other stuff. Must be that I'm about the same age as the Beastie Boys, but I'm really liking their music lately. Gotta love all of the pop culture references, and as another poster said it's fun music. I think alot of people get hung-up on the hip-hop style and just hate the music, but they miss the humor that is built into the music. Like in one of my favorite Beastie Boy lines "The original nasal kid is doing damage!"
That being said, I don't pay attention or put alot of weight behind the R&RHOF. It seems there are plenty of bands that maybe deserve to be in there who aren't etc. Good music is usually hard to put into a particular category. If you think about it, alot of classic rock has sort of a rap style as was highlighted by the rap cover of "Walk this Way". Listen to the song Back in Black, essentially Johnson is rapping the lyrics to that song.
So should the Beastie Boys be in the R&RHOF? Who cares. Listen to the music you like