doof, doof, you come into the shark tank and you're telling us "the doof is due," and that's your sales pitch? yes, exactly! to see the full pitch, log on to. abc.com, and to see more dr. doof, watch "phineas and ferb" on disney channel. >>> tonight on "20/20" -- work wars. >> tonight, this shark is working overtime. >> but he's not toning it down for anybody. >> you call people radioactive. you call people a loser. >> that would waste my time, otherwise you'll die a horrible death >> announcer: do you work for a bosshole? . if do you work for one, how good would this feel? >> i quit. >> announcer: going out with a bang, or at least a marching band. >> guys, out, right now. >> i'm quitting. >> one, two, three, four. ♪ >> announcer: we'll show you the right way. and the funny way. take this job and -- you know. >>> and, secret career killers. how many have you made this week without even knowing it? >> it's a mistake to be popular. how in the world could that be a bad thing? >> the eight secret booby traps of the office. >> inviting disaster. >> cubicle confidential. >>> and -- stealing