What's the best way...

[Randy5]

...to get a lot of people to view a funny three-minute video on YouTube or another viral video site?

[auryn]

Try to send the link of the video to blogs & people you know without spamming it and use tags.

[suwunk]

Create a comedian account - which is of course a good way of promoting your comedy show or stand-up act. This allows you to add your custom log, comedy style, show date information and CD purchase links on your profile pages