I have the orange box dvd sets of DBZ up to the end of the cell saga, so I'm just missing the buu saga, but to be honest, that's where i started to lose interest in the series, especially when they tried to force Gohan and his stupid Saiyaman gimmic. I ripped the shows with the original audio with subs, even though i grew up with dubs.
Only DBZ movie I "have" is the garlic jr one, and that's only because it's actually canon to the mainline series. I found it on archive.org.