-Windsor Canadian - this is used most often, but I'll substitute BV if cheaper. Mix with a diet 7up/Dr Pepper/Cherry Pepsi, so taste isn't too important.
-UV vodka (or another cheap substitute, not as low as Hawkeye, though) - for bloody's, white ruskies, & just recently tried Moscow mules.
-cheap Kahlua knockoff for white ruskies
-cheap tequila (I think Saunza or something like that) for the occasional margarita or shots
-Crown or Jameson for when I'm feeling classy (yep, these are my TOP shelf)