The more I think about it, the main reason I never really use clipboard extenders is because they lack a stack option. Most of the time I want to copy some things, then paste them in some order. LIFO, FIFO, the option would be nice. Normal extenders make this tedious by always having to chose which clip you want. But, if you could copy a bunch of clips, then paste, paste, paste, no re-selecting, no pop-up menus once you got started... this would be awesome.
-kfitting
kfitting,
The old free version of ClipCache, 1.41, lets you define a pair of hotkeys that let you step up and down through the clip list, popping up a tooltip as you go so you can see where you are. You press Ctrl-V when you get to the right one to paste it, as normal. I haven't tried recent shareware versions of ClipCache.
ArsClip, also free, has a form mode, which seems to be fairly similar. It also supports keystrokes and commands in its permanent clips, so you can automate formfilling, send dates, etc.
Disclaimer: I haven't tried either feature.