Your favorite skill Gem in PoE?

Bodyswap is pretty hilarious.

Movement skill? Check.
AoE Damage skill? Check.
Cool graphical effects? Check and mate.
Downside? Needs corpses. Not too much of a problem, especially with all the Breaches floating around recently.

Not even sure an MTX can be made that would make it cooler. That's how cool it is.

I've always had a soft spot for Cleave. Paired with Whirling Blades it's a pretty fun playstyle. Scoot and slice. It's just too bad you can't justify playing it these days without feeling like a retard. :(

spectral throw (with the seraphim MTX)

I just love everything about it
how it fills the screen, how follows like a buzzsaw trail when you keep whirling ahead of it.

it just lights up the screen.

Force Lightning Tendrils

portal

I like Lightning Strike for the sound and ground effects (on the beaches I can really pound sand). I also like the Lightning Arrow sound effects.

Flicker Strike. It's pretty amusing to clear screens and screens worth of enemies in less than a second with the right build.

Flicker Strike for that Goku Effect. The old Shadow CI flicker strike shadow build (that currently is not viable) is still my favourite of all time\

Frostblades,gets better with Multistrike and then even better with some sort of free chain(anything but the support gem).Shattering everything around you and clearing the screen of trash mobs.

Uhmpf-factor: Stormcall (just Animation, not real powerlevel)
Gameplay: SRS