UnScramble this Word: u a g e t a r n?

Questions

what is the first name of dr. smith "lost in space"?

what is the first name of ms. arquette, star of desperately seeking susan?

what is the full name of bullwinkle (from "rocky & bullwinkle")?

what is the highest number of best actors won by the same guy?

what is the name of batman & robin's secret hiedout?