I'd also like to throw in The Posies, especially if you like vocal harmonies. I'd go for "Dear 23" for a start.
I couldn't agree more about the band, but as for an album, I wouldn't recommend Dear 23 unless you like Big Star a lot.
I would choose either Frosting On The Beater of Amazing Disgrace, the latter being my favourite on account for it being a bit louder and because of the song Grant Hart.
In fact, I thoroughly recommend Grant Hart. If you want to hear true vocal harmony heaven, listen to Run Run Run To The Centre Pompidou, on his latest album Good News For Modern Man. Might be a bit hard to find, but it's worth it.
Although I totally want Fountains of Wayne to score big with Stacy's Mom, I do hope they find time to do some European gigs. I missed them the last time they were here. I did hear Brian Young sing Sink To The Bottom at a Chariot gig, though. Cool!