Cmd+1
Viewer
Cmd+2
Canvas
Cmd+3
Timeline
Cmd+4
Browser
Cmd+5
Effects
Cmd+6
Favorites
Opt+4
Audio Meters
Opt+5
Tool Bench
Cmd+7
Trim Edit window
Cmd+8
Log and Capture window
Cmd+9
Item Properties (for selected items and items under the playhead)
Cmd+0
Sequence Settings
Opt+Cmd+Q
Audio/Video Settings
Opt+Q
User Preferences