PS Ativan (lorazepam) and Valium (diazepam) also have the distinction of being the most ancient and crappy of the ancient&crappy class of benzos. Riddled w/ sidefx, neurotoxic, and marketed w/ narcobusiness-style techniques towards patients likely to abuse them (check out some old ads they've got for lorazepam @ wikipedia), they're really something...
Btw, they can give you amnesia and put actual physical holes in your brain. And yes, the latter statement is fully serious.