Startup Disk is FULL.. Help :(

[NeekMarie]

So my startup disk is full. Chop full of reminders and annoying force quits.

I've deleted fonts, imovie projects, old documents, unused apps, basically anything I didn't use, plus I often run Onyx cleanups and my trash is always emptied.

Although.. I have over 1,000 songs on itunes and over 2,000 photos on iPhoto.. is that truly taking up all my space? I mean.. it's a Mac.. isn't that what this thing is for? :/

HELP!

details-
Mac OS X 10.6.6
Capacity: 159.7 GB
Available: 908.6 MB
Used: 158.79 GB

 

[Nermal]

Something like OmniDiskSweeper can show you where all your space is being used.

 

[GGJstudios]

Run Disk Inventory X or Grand Perspective to see how your drive space is being used.

 

[NeekMarie]

Oh, that's convenient. Thanks guys!
Just as I suspected, my iPhoto has worn out it's welcome.. that's too bad..