Yeah that's pretty much it. You had multiple virtual desktops that let you have different sets of windows up on each and when you switched between them it played this cool animation of them laid out in a cube that you rotated to the next face. Then the wobbly windows is exactly what it sounds like. They'd jiggle when you dragged them around or when you maximized them.

Ran like crap on my old laptop I used for school but my god it was necessary to have. Still brings a goofy smile to my face whenever I'm moving windows around today since it's a thing you can still do in Linux desktop environments. Had I not had my Comp Sci degree pursuits disrupted by chronic illness I'd likely have had a similar experience to OP.