In my opinion:
Surprisingly a really good album, given that Jimmy Eat World are pretty bad (IMO) today. Also check out Clarity, but it's less punk.
An absolute classic. Better with every listen.
Definitely Milo Goes to College, though by today's standards it's not very pop.
I'd also consider the first At The Drive-In album pop-punk, it's just hard to listen to knowing that Cedric and Omar had so much potential but instead decided to make the Mars Volta. They could have been modern day punk heroes.
I guess it's less punkish but I really dig Rival Schools, a band with members from Gorilla Biscuits and Quicksand, who I understand are also really good bands.