Stereophonics - "Dakota" This song just screams summer vacation, in that dreamy summer fling sort of way.
Semisonic - "Closing Time" One of my all time favorite songs of the nineties. The tune is a bit cliche, and it was the only hit from their record "Feeling Strangely Fine" which I think is a tad unfair. However it wouldn't have been such a big hit if the song wasn't well written and well produced. (Listen to other songs on their album too; "Secret Smile" is another great Semisonic song.)
Spoon - "The Way We Get By" Spoon is one of my favorite bands. I have all their records from "Girls Can Tell" to "Ga Ga Ga Ga Ga" and this song is an awesome example of how cool and simplistic a rock song can be.
The Black Keys - "Just Got To Be" one of the best songs of this decade. Its a reserved conversation with a guitar and a drum set, with the vocals acting as a translator.