I've been to Cali, Colombia twice now, and I've yet to see a couple break out with the salsa dancing like this one. I'm sure if I looked a little harder I'd find them though.
Actually, on my last trip to Cali, a Caleño (the name for people from Cali) was asking me to teach her a few salsa moves.
Me, the gringo who until two years ago would be sitting nervously with a beer, watching everyone else have fun!
It just goes to show that you can't apply a city's stereotype against all it's people. Not everyone in Cali (nor Colombia) can dance like the couple in this video, so adjust your expectations before heading out, and you'll have a great time!