Almost straight from the kick-off Celtic doubled their lead, Hooper outmuscled Zander Diamond before crashing a shot past Langfield from about 12 yards out.
The Scotland striker spun off Bamba and latched on to a long hopeful pass, allowing it to bounce once then crashing a shot over Dorus De Vries from all of 30 yards.
But this has been the pattern of Arsenal's eight barren seasons: Stick around the major competitions long enough to have a shot, then let them all come crashing down at once.
His two-ounce caffeine and vitamin elixir, 5-Hour Energy, promises to keep users alert without crashing -- and claims a 90%-plus market share in the energy shot sector.