Could you give a link for those of us who have never heard of google?
Any search engine should do it. And Hollow, if you join withoutabox, they rate the comps. Check out the prizes, the success stories and the sponsors of each, and it should give you an idea how good they are. If a competition can't give a good prize, and industry contacts should be one of them, I wouldn't really bother. I think First Glance does a good shortie.
Good luck, and yes, MovieBytes is a great source. They do a 5-page monthly comp, too, which has no prize but the kudos, but costs nothing, and you get critiqued by other members. It's great practice - must do it myself one day!