segment which appears on every Mad Money show is the "Lightning Round" segment, where viewers call in (on live shows, they stand before a microphone in the audience) and ask Cramer about a specific stock. Cramer's object is to showcase his encyclopedic knowledge of stocks and give callers a second opinion on their stock ideas. He takes as many calls as possible before a buzzer goes off to indicate the end of the round. When this happens, Cramer gets upset and usually takes a few more calls. After this, the Daktronics buzzer goes off at his signal, and the segment is over. In the past, prior to beginning of the segment, Cramer would abuse the office chair provided for him by throwing it on top of other "victims" (damaged office chairs), also damaging the studio's wall and glass displays as well. The damage was made apparent by a caller in the "Lightning Round" on March 1, 2006, which prompted Cramer to throw his chair again at the glass display, causing it to crack even more. Cramer has said that the reason why he throws chairs is because he hates sitting down on the job. He often had to be at his old hedge fund by 4:30 a.m., and if his employees sat down they would often try to go to sleep, so chairs became "the enemy". The segment usually airs between 25 and 30 minutes past the hour for approximately 8 minutes. Additionally, a new "Overtime" session debuted at the end of "The Lightning Round" on the March 2, 2006, episode. In conjunction with the buzzer going off, a siren was heard, the "On Air" light flashed repeatedly, and the monitors around the set had Cramer rotating infinitely with lightning and siren images merged into the background, that latter also displayed on the viewer's TV screen at random intervals. Cramer took 5 more calls after this. However, the "Overtime" session was discontinued, starting with the "Mad Money 1st Anniversary" show on March 14, 2006. The newer "Sudden Death" segment at the end of the show used any time remaining at the end of the show for an even more rapid "Overtime"-like session. That too, was discontinued in February 2008. On February 25, 2008, Cramer introduced a Web-only version of the "Lightning Round", dubbed "Lightning Round Overtime". This feature had additional stock picks that were not seen on the television broadcast.