Pretty cool crossover, the Flash yesterday was kind of weak though. You can tell they're still hanging their hats on "Batman/Superman-lite" except Flash brings a different dynamic in that he's also kind of a smartass on top of being light hearted. Ollie should also have a touch of that like he does in the comics too instead of a traumatized Bruce-wannabe like he is in the show. Arrow is best when they breathe a little life into it and don't take themselves too seriously.
Also was disappointed that they didn't capitalize on the opportunity to get rid the sleeves when his suit is altered at the end.
Oh yeah and according to the mid-season finale trailer they're taking the Batman pastiche thing to new levels with the shirtless sword duel with Ras al Ghul
Really guys? No shame. Can't even pass off as a pastiche anymore, it's pretty blatant.
(and yes, the way they pronounce it is wrong according to the creator of the character, should be "Raysh" instead of "Raz")