First Flight: I disliked it a lot upon rewatches. It doesn't hold up the way New Frontier and to a lesser extent Public Enemies do.

Samurai Quack was great because they actually had a role for Genndy. I didn't see the one with the Cadet you mentioned. It must have aired in the third season which was largely first run on Boomerang.

Weird Western Tales: One of the highlights. And even better was the absolutely awesome cliffhanger.

Time Warped: I keep hearing people jumping out of their skirts at Hal Jordan's cameo but it didn't really amount to much. Plus, it was completely wiped out of canon at the end of the adventures.