Fun (Steel Train, Anathallo, The Format) is gonna take the power pop world by storm! Power pop legend Roger Manning Jr. even worked on their debut album! Be sure to download their free mp3 right here: http://www.previewnewmusic.com/fun/
One of my very favorite genres in Rock, yet its a label that too easily put on a lot of the undeserving. I mean youve got Alex Chilton, and Todd Rundgren, and Cheap Trick to contend with the former two are two of the greatest songwriters of the 20th century imho.
Big Star and Teenage Fanclub pretty much define power pop.
Bands like the Posies, Jellyfish, Material Issue, Nick Lowe, New Pornographers and Franz Ferdinand are also some good examples of power pop, IMO.