I think it's worth a note that now (with patch 1.22 onwards) we have a new cheat, moviemakercheatsenabled true, which is really awesome, as it can make a Sim do any and all animations in-game. It can be enabled by...
1. Opening the cheat panel => Ctrl+Shift+C
2. Typing "testingcheatsenabled true" without the quotation marks.
3. Typing "moviemakercheatsenabled true" without the quotation marks.
4. Voila, Shift+Click on your Sim and a new pie-menu will appear, "Animation...".