Don't really expect any Spiderman cameos in these films. My friend just explained that the recent Marvel films that involve the Avengers are owned by Disney/Marvel themselves, while Sony has the rights to the Spiderman films (the X-Men films are owned by Fox, by the way). Because these guys are mainly competitors, there's really no chance of even a cameo, or so I hear.
Battleship- 8.5-9/10...really it was actually a pretty good film, though there where some unanswered questions through out the movie. definitely worth the see!