The little Voltron music flourish is still one of my fondest memories of childhood. The rest of the show was hokey at best and ridiculous at worst (why didn't they just form blazing sword from the get-go and take care of business?) but hot damn, that Voltron theme bit is so great.
I won't rate because it was awesome when I was 8, but when adult swim had it on again, no amount of nostalgia could keep it from being nerve-gratingly bad.