You can't really put Pucker in the same category as the other liquors you've mentioned. It's a liqueur, which is supposed to be mixed with a spirit (80 proof or higher).
Pretty much anything with Bailey's Irish Cream in it is okay by me. Irish Angels, Irish Dreams, etc.
I also like tequila shots with lime and salt, margaritas, cosmopolitans, and Mike's Hard whatever. Since I'm really not a beer fan, most of the sweet drinks appeal to me.
Extra Tasty is a nice website because you can enter in whatever liquors you happen to have or know you're going to be buying, and it will give you an extensive list of different drinks you can make with them.