Misc: 80's - Name the duet who sang 'I Knew You Were Waiting For Me'?

Questions

this show features two absurd, cartoon teenagers with the laugh, "huh huh"?

this show has videos from 7:00 p.m. until 9: p.m.?

this show is a contest in which contestants try to survive the "scratch factor"?

she was the chicken girlfriend of gonzo?

the muppets recently released a movie based on this dickens's novel.?