Can I choose what Time Machine can back up?

[macswitcha2]

I want to make the best use of my backup via Time Machine. Since TM backs up in the background in designated intervals, can I choose what it backs up instead of it backing up everything? For instance, can I have it just back up applications and related items, specific videos, music, specific photos and documents?

 

[miles01110]

You can, but you have to exclude anything you don't want.