Salad fingers and weebl and bob were both on weebl's stuff AFAIK http://weebls-stuff.com/ back in the day but got put on to youtube so that he could reach a wider audience. (and with the downfall of flash player).

Edit: Reading up about it, salad fingers had a different author

'Badger! Badger! Badger!', scampi, magical trevor etc. were also from there. It was a favourite site of my friend group when we wer 12 and spent lunchtime in the computer lab at school.