This episode is a shining example of everything that makes Transformers: Animated so full of WIN. G1 references/fan nods, action, and especially humor, all in perfect proportions! Only two things really hurt my feelings of this episode: one, Grimlock and Swoop didn't fight Soundwave; and two, that it's taken this long for the writers to demonstrate the "new" Sari.
Ok, third, the fact the series may be over soon.
Wreck-Gar came out of nowhere, and really upped the laughs. Oh, and I loved seeing Powel getting his comeuppance!