FPS varies considerably from film to film and game to game to adhere to the above question, animations are probably the most simple form of film in terms of this so it's not a great example.
24fps could look totally wrong in a film or game even if it looks right for tom and jerry.
Wrong. Very wrong. All movie film is 24 frames per second. TV-wise: NTSC video footage (the standard for North America) is also 24 frames per second. PAL video footage (European standard) is 25 frames per second.
Game FPS of course does very, but the important thing is that it stay as consistent as possible. If games could be played at 24 fps and not deviate from that by even a single frame, ever, then it would look and be smooth like movie footage and no one would care. Most games shoot for 30 FPS or 60 FPS. The CHANGE in FPS is what makes games look bad. If you are playing at 59 fps and it suddenly drops to 30 fps, it will catch your eye - also, since game input is often tied to FPS, the response time of your control inputs will be suddenly off or different.
Now that
that's out of the way:
I'm amazed at so many people calling on Bethesda to fix screen tearing when it appears many people didn't take the time to learn what exactly it is and what causes it. As other posters have tried to say and point out with links, screen tearing is NOT CAUSED BY THE GAME. Any game with screen tearing is the result of a disconnect between the FPS of the game and the refresh rate of your monitor or TV (yes, TVs have refresh rates). If FPS are too high or too low relative to your refresh rate, tearing occurs.
The ONLY THING game developers can do to reduce this is try and design the game to have as consistent a framerate as possible. This means making sure not too many enemies or too many SFX or spells are on screen at once, etc. Poorly optimized games with a lot of dipping FPS areas can cause a lot of screen tearing, but if the developers have optimized for as reliable an FPS at all times as they can imagine, there isn't anything else they can do. The fact is, the same game can tear or NOT tear for different gamers depending on the TV they are using.
Screen tearing can only be avoided completely by having V-Sync turned on (which the 360 has by default), AND the FPS of the console or PC must stay above the refresh rate of the TV or monitor in question and NEVER dip below it. PCs can manage this depending on their specs, but consoles can't push over 60 FPS on an open world game like Skyrim constantly without regards to how many NPCs, monsters, spells, are on screen.
And please, spend 5 minutes on Google researching screen tearing before demanding a fix for something the developers have little to no control over.