There's some really good first round match-ups. Pacers vs Cavs and Rockets v Thunder, Raptors v Bucks. Jazz vs Clippers should also be an interesting series
The individual battles in CLE vs. IND and OKC vs. HOU will be fun to watch. I don't know if it's much of an upset since it's a 4 vs. 5, but I love Utah over the Clips. I think the window has closed for the Chris Paul/Blake Griffin/DeAndre Jordan core. Utah looks ready to make the jump.