COLIN  A solid burning utility for disk images, I was really pleased by how simple yet stable it was. It's got features enough and the price is unbeatable.

Highly recommended!  
(Version 1.71u)

COLIN  For Camino users, CaminoKnight is a godsend. It transparently updates Camino to the latest, and usually stable binary.

While it is somewhat of a hassle to get started (the options are rather ambiguous at times), it does the job well and if you're a user willing to play with nightlies, then such problems are par for the course.

Highly recommended!  
(Version 3.0)

COLIN  Simply an excellent little extension to iTunes, it allows you to quickly search, has a non-intrusive pop-up to notify you of what you're listening to, and a wide variety of keyboard shortcuts.

I would highly suggest this for anyone on a MacBook or PowerBook, it's far more efficient than using iTunes itself. As well, one is generally using a lot more keyboard shortcuts when on the go anyhow.

Oh, and it's inexpensive to boot!  
(Version 3.0.8)