Although these answers are funny, in all seriousness, there are quite a few. I'm not going to say Jeremy Lin like a lot of others will because he really isn't a star yet. Some names that come to mind are Gilbert Arenas (look up his Impossible is Nothing video on youtube), Udonis Haslem (he wasn't even drafted), and Monte Ellis (he was undrafted from AND 1, and he was benched his first whole season).