I've started logging onto SC2 again lately, but only to play Star Battle. It's a 6v6 AoS/MOBA map (like DotA and HoN) but pretty noob-friendly since everyone is playing a lumbering capital ship that moves and turns very slowly.
The big thing is there's NO RESPAWN so it's not rare to have 15-minute games, though I have seen them drag on for hours. When you die though, a lot of the time it's fun to just zoom in, sit back, and watch a bunch of battlecruisers and carriers and leviathans duke it out.
The next big thing is you can't control auto-attacks -- basically the closest enemy within your attack range will get hit no matter what. You can't switch targets or stop attacking.
Also everyone gets like 6 potential abilities, but since games are typically very short you have to choose your skill build wisely.
Anyway yeah if anyone's interested hit me up and we'll play.