Jesse Hollington recently wrote a great post called Getting more Focused with OmniFocus. He’s totally got the Grouping Tasks by Session down, complete with a really nice hotkey/script.

The script takes a link in a task and executes it. So you can have a link to a perspective, application, URL, etc and go straight there with a key command. He uses Fastscripts to set the hotkey.  I don’t own that software, so I linked it up using Keyboard Maestro.  Here’s my setup:

 

Keyboard Maestro - Go to LInk