2.4GHz. it's called one of the the ISM (industrial, scientific, medical) bands even though it's almost never used for any of those

EMP

Most of them

the tickly one

The one that melts my queso dip

Infrared.

shoutout to UVB for the vit D

The highest or lowest frequency in the universe.

shoutout to radio waves, transmitting sound through the fricken air, that is so cool

5 GHz radio, because it carries WiFi

gamma

Might be a little boring but I'd have to say the visible spectrum, especially reds, I live for color and spectacle and that's what I can see~! :D
And as someone who practices a lot of skin care I'm not a huge fan of ultraviolet :s