Glitches "R" Them

I take a lot of screengrabs for reference material, reminders, colour tests etc. Recently, my computer's been experiencing some weird angles with these since I upgraded to Leopard. The results are kind of valid in their own right, but I want the old screengrabs back! Or at least have the freaky ones as an option, rather than the default. Or something. The one above is my favourite to date.