I'm not gonna go like some people and just say its crap, but I do think its overrated. Mainly (i think so at least) from Greg Howe. I remember reading a few years back that he developed some of his unique techniques from trying to play Eruption, but playing it wrong. Funny I guess, considering Greg Howe completely blows Van Halen out of the water. In his first album with Howe II (a little band with his brother), theres a similiar solo track to Eruption, but of course with Greg playing. Kind of puts Van Halen's playing into perspective when you see where he probably could have taken it (if he'd kept on improving after the 80s). And of course Greg Howe has improved since '89 as well.
Here it is, its a small file:
http://www.sambob.net/03_-_greg_howe_-_strat-o-various.mp3