The year's almost over, so let's make a list!
In no particular order, here are my favorite albums and EP's from 2008:
Bloc Party - 
Intimacy: Sounds a lot like the previous two albums from this group, and that's a good thing.

Frightened Rabbit - 
The Midnight Organ Fight: Great folksy-indie rock from a Scottish band with the least intimidating name ever.

Girl Talk - 
Feed The Animals: An album full of mash-ups of raps over melodies from other songs.  It's kind of fun to hear someone rapping over a tune you recognize, but before you know it, the song has moved on to something else.

The Kills - 
Midnight Boom:  I love this record; it totally rocks.  More cool than the White Stripes.

Los Campesinos! - 
We Are Beautiful, We Are Doomed - This group is like a more whimsical Arcade Fire.

Sharleen Spiteri - 
Melody - I love the Scottish group Texas, and I love this solo album by the lead singer.  The most pop thing I have on my list.

She Wants Revenge - 
Save Your Soul: I enjoy a good male falsetto, but I also love music with deep, monotone vocals.

Tonight - 
Modern Romance: Kind of new wave-ish, kind of spacey.  I listened to this EP continously when I first downloaded it.

Most of this music can be found for cheap at 
eMusic, which is where I find most of my new music nowadays.  Give it a try if you get tired of listening to Fall Out Boy or Nickelback.