So I went from W7 (which had a multitude of great apps for dealing with more than one monitor like Ultramon) to an OS X Lion Mac Pro & Macbook Pro. I loved using my Macs infinitely more but they apparently didn't work too well out of the box with a multiple monitor setup.
Here's my attempt at dealing with the multiple monitor problem: Multimon. (<- Click to view in App Store)
• Multiple Menu Bars
⁃ Should work for any number of monitors, the max I was able to test up to was 3 though.
(People with 9 monitor setups, please let me know ).
• Advanced Window Management
⁃ You're more productive with another monitor but nobody wants to drag windows left and right.
Easily send a window to any of your monitors via a drop down or a hotkey. Maximize or minimize too!
• Automatic Window Resizing
⁃ A lot of us don't have the luxury of matching dual cinema displays . This'll automatically resize windows that are too large onto smaller monitors.
⁃ Pretty customizable hotkeys for a bunch of the features listed above as well as quickly hiding all menu bars, etc.
So yup, that's it.
You can tweet me for Multimon support / feedback at @delveapps.
Tweet my personal twitter about apps / design / apple / anything at @aaronykng .
Hope you guys find it useful. Look forward to hearing what you guys think.