Wow, there isn't a lot we haven't tried, or wouldn't try... I mean, having someone else in our bed is something we fantasize about, but at this point I doubt we'd actually do it.
Both of us have tried anal, and I must say even though it doesn't feel good on me, I love giving it to him. I have come to love being rimmed.
In my opinion, fear of the anal area is something that inhibits people from at least trying something cool... personally, our whole sexual repoirtoire has doubled since trying anal stuff.
Oh, I guess we probably wouldn't get into hard-core BDSM stuff, though we like light bondage and blindfolds (or at least, I'm looking forward to getting into it). We wouldn't do anything that causes either of us to be in pain or uncomfortable, I guess.