Still one of my favourite Flash cartoons ever. In my opinion, this is where the Salad Fingers series hit just the right balance of weirdly amusing and genuinely scary that it kept for the next few episodes. The style is definitely odd, but it holds up today as visually interesting and cleverly executed, rather than the flash in the pan of Invader Zim-era "weirdness-for-weirdness's sake" that some people accused this series of being at the time. Not that there isn't a bit of that going on, of course!
Listen carefully to what Salad Fingers has to say to the toilet... when I realised what was happening once upon a time, it solidified this as one of those Flash movies I get excited about. (He's speaking as Jeremy Fisher, in response to the things the other Salad Fingers says in the next scene!)