Ah, I see that Vista's preview handlers crash twice as often as XP's shmedia and shimgvw handlers.

If you open a folder full of movies and pictures, you can almost guarantee COM Surrogate will crash constantly until it gets through every file you have (and it trudges through every subdirectory to do so).

In Explorer, click Organize > Folder and Search Options (or Tools > Folder Options), then go to the View tab. Checkmark Always show icons, never thumbnails.

Edit: As Simon has pointed out in the comments below, the main cause is usually third-party software (of which I was afflicted when I wrote this post). I'm sure one of those retarded codec packs causes it for most people (dear god people, stop using codec packs and just get VLC Player).

Simon Zerafa stated:

The main culprit seems to be older versions of Nero (the Vista Upgrade advisor flags these as incompatible with Vista) and DivX players.

It seems to be caused by third party players and applications that patch those functions in XP / Vista to allow previews in Explorer.

Updating the affected software to Vista compatible versions seem to be the best course of action. Failing that, find Vista-compatible alternatives.