I have over 400 (most of them previously bought by my parents) so it isn't really practical to list them all at once. Instead I'll just tell you the ones I currently have in my car:
Sarah McLachlan - Fumbling Towards Ecstacy
Velvet Goldmine Soundtrack
Thursday - Common Existense*
Skrew - Burning in Water, Drowning in Flame*
Public Enemy - Fear of a Black Planet
Sineád O'Connor - Am I Not Your Girl?
*purchased in the last week
I also have two copies each of Evanescence's Fallen and NIN's Pretty Hate Machine so I keep the extra copies in my car. You can see pictures of some of my other CDs under my #voxdiscs tag if you're interested.