Perhaps one of the coolest, free programs available to revamp your Task Manager is available from Sysinternals, a sub-division of Microsoft.

It enables you to see a tree-view of running programs (especially helpful when trying to understand, perhaps, why a program keeps restarting itself?), as well as viewing of the command lines that start programs.

For power users, this enables you to really take control of the operation of your computer, and more importantly, fine tune what should be running and what shouldn't.

If you're a Task Manager addict, this is one replacement that is worth the minimial effort installing.