Cool Cocktail bars in North Park or Tierasanta?
The cocktail revolution hasn't really hit North Park yet and it's still pretty beer centric. A couple of options for decent cocktails would be Red Fox Room or Bluefoot but neither are really anything special.
I'll agree with Ewilensky on Small Bar. Pretty good option; especially if you're into Scotch. Small Bar's sister bar 'Eleven' has some good cocktails too but that's more City Heights than North Park.
Alchemy in South Park has good cocktails too.