2010 draft alone, since I payed more attention to that one than I do most:
Jack Campbell
Brett Connolly (not exactly a bust, but I saw a top scorer in him. I still wanted Skinner over him, but we didn't land him either. In the end, I'm very happy with Granlund.)
Emerson Etem
Brett Bulmer (out of all the Wild's 2nd rounders that year, I was most convinced of him. Thought he'd be a mix of Lucic and Burrows)
Kirill Kabanov (didn't expect a generational scorer or anything, but I thought he'd be a good middle six scorer and thought the Isles were genius for taking a chance in the 3rd)
Ryan Martindale (thought it was a great pick for the Oilers. I was convinced, for some reason, that he'd be a middle six NHL center)
Max Gardiner (Jake's brother. I watched him in High School and thought he was great... thought the same with Patrick White, so, lesson learned. Anyway, after transferring away from the Gophers for Penn State, he did a real fine job offensively his first year there. Then the wheels came off.)
Since I already mentioned him: Patrick White (in his case, my hype for him died almost the second he hit an NCAA rink)
Also from that draft, I thought Colton Gillies was a terrible 1st round pick, but I also thought he was going to be a prototypical 3rd line shutdown center. How very wrong I was.
Anyway, I could go on for a while, but this is an alright list, even though it covers only 2 drafts. I guess I'm wrong a lot.