Is anyone watching 'Batman: The Brave and the Bold'? Because you seriously need too.
http://www.youtube.com/view_play_list?p=3B74E3B916BC3552&page=3Recommend all of them but if you're short on time go with 'Terror on Dinosaur Island' and 'Evil Under the Sea'.
If you can get over the 'Oh my god, this isn't 'Batman: The Animated Series', it's very good. Where BTAS embraced the darker roots of the character, 'Brave and the Bold' embraces the era of Batman where there was fun. It's also a team up series but doesn't usually use the big guns. Green Arrow, Aquaman and the new Blue Beetle are used the most. Off the top of my head other heroes I can recall are Adam Strange, Entrigan, the new Atom and Plastic Man. Also Aquaman is amazing in this series. The villians are heavy second and third tier, going so far as to have Gentleman Ghost be a main villain in two or three episodes.