Oklahoma City is the only team in the NBA, imo, with top end talent comparable to the Cavs. As a result, they scare me. The fact that those three guys have an NBA finals already under their belt doesn't help.
San Antonio is the defending champion. They didn't really lose anyone. They have to be considered a threat.
Golden State is terrifying because they remind me of Dwight's Orlando team that knocked out the Cavs in 08-09. Not because of their game plan, but just the idea of a team getting so hot from 3 that they simply can't lose. All it takes is a few games where they can't miss and nobody can beat them in a series. Hopefully they flame out or lose due to a shooting slump before the finals.
Memphis is kind of a threat to me because of their style. I think Kevin Love would really struggle in that series, but at the same time, part of me thinks the Cavs' talent would simply win out in a series against the Grizzlies. I guess I look at them as a dark horse, but I don't really see them advancing that far anyway.
Portland, the Clippers, Houston, and Dallas are all teams I'd welcome.