This is one of the main reasons I don't like D&D at high levels. Yeah, the cleric is okay. What about hitting the wizard with a DC 26Fort save? Or doing the same to the fighter with a Dominate? And I should be doing that - only problem isn't that its hard for the PCs to overcome, its virtually impossible. Combine that with the near uselessness of the 0 to -9 safety net when you are dealing out 30-50 points at a whack, and you start mowing through characters. Your choices are to metagame your villains and have them not do what makes sense, kill characters off by the handful, destroying countless building plots and such, or allow cheap and easy Resurrection, which for me kills verisimilitude.
Don't like it much at all.