This is a series of little sketches that feature Wallace testing out a series of new inventions. Naturally, they pretty much always go wrong in one way or another.
For what they are, they are amusing enough. Brief set up... silly nonsense... end. Not much more to it.
It is always nice to see Wallace and Gromit as they have actually got surprisingly few films given how long they have been around. But... due to the incredibly short length, these shorts just don't hold a candle to any of the longer projects.
Obviously, there is no time to build up any emotion... the jokes are swift... the background gags are minimal. Everything that you would expect from Wallace & Gromit is there... just significantly less than normal.