I didn't really tell any jokes to be honest. The one thing that was as close to a joke was about stephen hawkings and apparently as I was informed afterwards it was very similar to something Ricky Gervais has said so I won't be doing that again.
Apart from that it was mostly my own material. You wouldn't last very long if you just stole other people's gags. However in saying that if you haven't seen every comedian then you might come up with something similar in the same way a musician can come up with a similiar riff.