If you are using the latest snapshot and enter the following commands, your game will crash.

/summon FallingSand ~ ~ ~

{TileID:54(chest)}

/summon FallingSand ~ ~ ~

{TileID:130(ender chest)}

/summon FallingSand ~ ~ ~

{TileID:146(trapped chest)}

It will crash your game whether you use the command in chat or in a command block. You can reload the world after you crash, I'm guessing since the entity despawns between game sessions.

I have not tested it in multiplayer.

I had a similar problem in the last major snapshot (14w21b); the tag TileID would not work at all (not only with those blocks, but with all blocks). No matter what value I put for TileID, it would always be a sand block. I no longer have this problem, but now if the falling sand has a TileID of 54, 130, or 146, it crashes the game.