I loved all the Glee parodies (REGIONALS!), but this was a pretty weak musical episode. I usually love musicals like in Scrubs, Buffy, etc. But the singing in this was just so bad. There weren't any songs in this that I'll think of later and want to watch just because I liked listening to it so much.
So that's disappointing. Community is usually so successful when it tries going into some other genre like action or a mockumentery or whatever, too.
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The batman villians all seem to be one big joke that batman refuses to laugh at - SantaRPG