I like bondage, of the "restraint" variety; not so much into ropes or "breast bondage" -- that just looks unattractive and unhealthy as all get out to me, plus it pretty much seems to require large breasts, and my taste leans toward smaller breasts (if a video game allows me to modify my characters' dimensions, and I'm rolling a female character, one of the first things I do is drag that "chest" slider all the way to the left to shrink her breasts as much as it will allow).
Erm, I have a "small breasts" fetish

Some S&M, mainly impact play and clamps. I don't get off on watching electrical play in a video, though I might be interested in trying it out in real life. I think the problem with electrical play in a video is that the effect is completely silent. The only visual effect is the reaction of the victim, but it's just hard to "see" what is happening. I realize clamps are also silent, but you can at least see the pinching.
Mmmm, panties. I love panties. I just hate it when I'm watching a porn video (of any kind), and the scene cuts from the girl being fully clothed directly to her being fully naked. I like to watch her disrobe and strip down to her panties. Also, scenes where, for expedience-sake, the girl is wearing no bra and panties under her clothes are equally disappointing to me.
Schoolgirl uniforms. I don't know where I picked this one up, as I was raised in schools without uniforms and never knew any "Catholic school girls". I just remember being really turned on the first time I saw a girl in a school uniform (white blouse, necktie, and pleated plaid skirt). That was pre-Internet, so I think I probably saw it on television. You would think that cheerleader uniforms would have a similar effect, and I saw plenty of those in school, but they don't, at least not for me. Perhaps it's my childhood association of "cheerleaders" with "stuck-up popular girls" (I was not part of the "in crowd" in school). Cheerleader uniforms are worn by the "elite" girls, but school uniforms can be worn by any girl.
Asian (mostly Japanese/Korean) girls. Though I prefer to see them in still photos; I can't stand most Japanese porn videos. They take too long to get to the point, and the girls never seem to enjoy it.