Computers
DTI
We've had one good experience after another with DTI. They're a local business that has a few branches, and one of 'em is five minutes' walk away. They know everything, they're super-helpful, and they actually attend to your needs after you buy stuff from them. It's amazing.
906 Yates Street (map) 388-9991
CompuSmart
If you need computer stuff and DTI's closed, head a bit farther up Yates to Compusmart. They're a big Canadian chain with a solid reputation, good prices, and great selection. They're also starting to get a decent selection of digital cameras and music players.
966 Yates Street (map) 382-3475
Gizmo's
The used computer parts center of Victoria. If you need some upgrading done, if you're looking to buy or sell some used PC parts, or if you want a new custom-built PC for super-cheap, this is where to go.
#3-774 Bay Street (map) 381-8222
Electronics
London Drugs
If you're looking for digital cameras, camcorders, mp3 players etc, this is probably the place.
A&B Sound
It's a big store, and they only seem to hire really weird guys for the electronics section, but they've got a solid selection of sound gear, car stuff and consumer electronics at decent prices. They also have crazy sales several times a year. Really crazy sales. As in people-line-up-at-4am-to-get-in kind of sales.
641 Yates Street (map) 385-1461