It sounds so stupid, but I have a really heavy hand and always hit the right mouse button by mistake and of course once you have SPU open there is no way to close it other than to choose something from the menu. It would probably work a lot better as maybe CTRL + Rightclick or Shift + Rightclick
Also someone was saying that they wanted to open more than one SPU for differant things. Imagine a CTRL + Function Key + Right Click option in TClock2 for a number of differant setup SPUs, or even just various programs. Example:
CTRL + F1 + Rightclick - Shortcuts to Graphics Progs
CTRL + F2 + Rightclikc - Shortcuts to Drives
CTRL + F3 + Rightclikc - Shortcuts to Customization Apps
Just some thoughts on T-Clock2 rather than SPU really.