for some old school super robot style shows i'd recommend:
Godannar - fun show. lots of babes with big boobies, numerous mechs and combining mechs.
trailer here:
http://www.advfilms.com/titles/godannar/trailerbuy.asp
Gaogaigar - most likely you'll have to look for the boots otherwise its only a region 2 release. there are 2 versions, the regular tv show (something like 50 episodes), and the Gaogaigar Final - which is a 3 episode special. the tv series is much better. it's like a mechlovers dream - robots that transform, robots that combine, robots that transform and combine, over the top action sequences, yelling out cool moves etc.
list of mechs:
http://goshouworld.com/GaoGaiGar/mecha.htm
Gaogaigar Final opening sequence:
http://goshouworld.com/GaoGaiGar/ima...gg_opening.wmv
Getter Robo Armageddon (or Shin Getter) - i've only seen this version (there's numerous ones after this series - Neo Getter, New getter Robo etc). this is great cuz: it's from the same guy who created the original super robot genre in the 70's; it's an update to the original show, which also happens to be the first to feature combining/transforming robots.
opening sequence:
http://www.advfilms.com/favorites/ge...oads/index.asp