I'm a big fan of really popped f/s 180s going as fast as possible, then b/s half cab. Sometimes the half cab is full 180, sometimes it's a fakie ollie with a little bit of turning but the majority of the 180 is a pivot. The pivoted version is cool because it feels like so much could go wrong so it's a cheap way to get a little bit of a rush.
Also I like doing the same "line" with back 180s and those super quick back 180 powerslides.
For a while, I'd do the quick back 180 powerslide and then f/s halfcab as quickly as possible after. Was inspired by a Brian Peacock clip I saw and that's a fun one.