This episode's gotta be up there with the all time greats. Not THE greatest, but still. It was awesome all round. No one part stood out for me (except the Bloo Wilt driving thing already mentioned). It was also the first episode I saw, when I was deciding if I liked it or not, and I thought by the end that it was worth a shot. I would later be VERY glad that this was the first I saw. If you see a fairly bad one, or even an average one first, you may not cotton on to the true greatness of Fosters before you relegate it to "not worth my time". I know a freind who I think would really like Fosters (he loves Azumanga Daioh, which I see as a similar humour), but the only episode he saw was Hiccy Burp, and now he refuses to watch any more.
Ah, well, I can always try for a convert.