Chokes generally - big fan of guillotine from standard half guard, rear naked with the anaconda on, triangle, teepee... Always liked kimura from guard and american from mount too though... Old school stuff I know..
Arm triangle, straight ankle lock (the true ankle lock not just the pain version). Although I'm quite enjoying playing with the victor roll to knee bar. I suck at it but it feels wicked to hit it!
electric chair has been a favorite for a long time. I used to hit it at least a couple times a class while rolling. I love anything from the half guard.
Nothing like slapping on a choke. Triangles are godly from the bottom but nothing beats the rear naked. I feel like you could choke out Jesus with a rear naked choke.
And electric chair is the mufuckin shitttt!
"Like A Wild Fuckin Savage from the Dark Side of Danger" - Ninja