There is a delicious drink called a Kobai. I don't know that my musician friend Jefferson Montoya invented it, though it is a fine beverage. I like to chill the ingredients, though it is good with room temp liquor as well.
Just mix Kahlúa, Southern Comfort and Orange Juice in equal amounts.
Some people increase the Orange Juice a little, though it will just take longer to get trashed and share too much personal info.
It is a delicious drink with a good kick and some great flavor combinations. No part of it seems to overpower, it just adds complexity. I have enjoyed quite a few Kobai moments with my friends in Vegas. Cheers! Thanks to Jefferson, now go buy his album, it rocks. You could get a free ipod according to his site.