Nice thread OP...it's always fun to think of the "best" of times
In no particular order
Voyeurism - Watching a lady undress, the electrical magic of the quiet, the only sound...the removal of her clothing, then watching her pleasure herself, or another person
FFM - I love watching my lady surrender to another woman's advances
MFM - Sometimes, there's nothing quite so special as listening to my lady cumming on another guy's cock while she's swallowing mine
BDSM - Japanese rope play, suspension, zippers, multiple forced orgasms...OMG where is Sassy!???
...and oh so many more!
Ladies...don't mistake the silences...it's not that quiet in my head.
I find greek to be a highly enjoyable activity with a skilled lady. I don't know if it qualifies for kink (depends on who you ask) It's not offered widely (in the provider circles I frequent), but I do have an angel who will make the magic happen (for a bit' extra of course)