Vegeto may have a spot as my favorite, but I've always been a Gohan fan, especially the Gohan that defeated Cell (Arguably the best saga of the series). A lot of people complained after he became the nerdy teenager and took the form of Great Sayaman (which they had every right to) but I still liked him. When I talk about DBZ, I always tend to lead to talking about Gohan because he could have been done so much better. I'm pretty sure the show was supposed to be about him, as that's where practically every saga seemed to lead, but Goku saving the day was too much of a fan favorite. I'm also a firm believer that Gohan should have kept a sword. He had one as a kid, his apprentice had one, and he was suppose to get one as an adult but it broke.
Going to the games, I played all the budokai games all the way to Tenkaichi 3. I think that game pretty much perfected Dragon Ball fighting. Best movies were in Burst Limit but that game took a step backwards in fighting. Never played Raging Blast and don't really plan on it because I'm satisfied with hours of Tenkaichi 3.
And finally, all DB fans should know about these two websites.
http://teamfourstar.com/
This is a parody of Dragon Ball Z that others mentioned. It's probably the most known online parody. It is very funny yet still stays to the series. The inside DBZ jokes are way too hilarious.
http://www.dragonball-multiverse.com/
This is a fan made comic based off the dragon ball series. The drawings and fights are similar the show so much that many people believe it should be part of the series.