The two below are by favorites right now that have a BDSM's feel to them; I think they're decently written and don't seem sooo far fetched that they couldn't happen.

"Into the Arena" by Sean O'Kane
"The Gladiator" by Sean O"Kane

For non-scene related reading. I think my favorites are:
Wizards First Rule. Anyone who doesn't picture Denna in her red leather as a Dominatrix just ain't thinking.
Faith of the Fallen. Both of these are by Terry Goodkind, who as well as being a writer a love is also a pretty decent human being.

Anything from the collected works of Andrew Vacchs.

and for laughs I read Janet Evanovich's Stephanie Plumm series.