A tesseract is a four-dimensional cube, a "hypercube," or a cube in 4-space. Just as a 3D cube can be unfolded into a flat 2D shape of six squares (its "net"), a 4D tesseract unfolds into eight 3D cubes.
I wrote a simple console script that makes the mousewheel into a "Timethrottle." Rolling the wheel down steps through several levels of slow-motion. Rolling it up speeds things back up to normal speed.
Just wanted to show off how awesome Mass Effect's combat can be. It's highly strategic, but it can still be fast-paced, depending on your approach. And what a purty game. She's a looker!