One of the first Oswald the Rabbit cartoons, written and directed by Walt Disney, has four minutes of gags involving Oswald trying to get his trolley going on the tracks only to his some obstacles - he has to give a cow a stern paying-his-mind to that won't get off the tracks - and then the last two minutes are sheer mayhem in the most enjoyable way from the era of 1920's cartoons.
There's little moments that stick out as being especially funny and cool, like when the train is going on its manic spring through its tunnels and then when Oswald takes off one of his legs to kiss himself goodbye, literally. The general pace of this is what keeps it entertaining, that there's something about to come every mother second. The gags are so fast that you may need to watch it a second time to catch the few good ones that you might have missed. It's mostly those final two minutes though that seals the deal for this being a fun sit as opposed to just an important but slight one. Already here Disney is primed for when he has to go forward with his own Mickey Mouse shorts.