I enjoyed DBZ the first time I watched it through. Granted I've only seen the dub (I know, I know...
) but it was still fun. The only real DBZ fix I get now are either playing the Budakai Tenkaichi games (ain't Street Fighter but still great) and the endless parodies on on youtube. My favorite of which is "The Pylons are Trap Ball".
My favorite characters would have to be Frieeza, Raditz, Nappa, Piccolo, Nail, and... uh... Cooler, I guess? I love Frieeza's character design and his aristocratic and pompous personality. I'm a sucker for white and blue/purple colour schemes and Frieeza just seemed to have been swept under the rug by fans once Cell came into the picture.
I've only seen the first three movies that were released on VHS (I still have them buried away somewhere) and my favorite would have to "Dead Zone". Garlic Jr. was a good character who reminded me of Emperor Pilof and the art and music really spoke to me.