-Shrinks the manipulator.
=Enlarges the manipulator.
Alt + arrow keysMoves selected object one pixel in relation to the camera. Great for subtle shifts.
W + Left Click holdBrings up a hotbox with different Translation settings.
E + Left Click holdBrings up a hotbox with different Rotation settings.
R + Left Click holdBrings up a hotbox with different Scale settings.
SSet keys on all channels.
Shift + WSet keys on Translate channels only.
Shift + ESet keys on Rotate channels only.
Shift + RSet keys on Scale channels only.
I + Middle Mouse clickInsert keys in the graph editor. This works great as it tweaks the tangents automatically to fit with the current curves.
.Jump to the next key.
,Jump to the previous key.
Alt + .Move forward one frame.
Alt + ,Move back one frame.
K + Middle Mouse dragScrubs through the timeline using the mouse.
YRe-use the last tool.
GRepeat the last command. Very useful when you need to repeat a common operation, such as constraining.
AFrames everything in the viewport or graph editor.
FFrames the selected object in the viewport or graph editor.
Ctrl + ASwitches between the Attribute Editor and the Channel Box.
1Sets the current object to Low Quality.
2Sets the current object to Medium Quality.
3Sets the current object to High Quality.
4Turns on Wireframe mode in the viewport.
5Turns on Shaded mode in the viewport.
6Turns on Textures in the viewport.
7Turns on Lights in the viewport. If there are no lights in the scene, this mode can be extremely useful for viewing the silhouette of a pose or of an entire animation. Just be sure to hide the background or else everything will come up pitch black.
[Undo the previous camera move.
]Redo the last camera move.
ZUndo. The mightiest of all shortcuts!
If you have any hotkeys that you find useful, whether they are default shortcuts or custom made, feel free to add them in the comments below! Also, if you'd like a complete list of Maya hotkeys, follow this link: Maya Hotkeys