 After years of market research, he finally made his "greatest triumph" in the form of the Trivection oven, a product he created at General Electric, having first envisioned it while responding to Liz Lemon's prank call in 1986.It was on the strengths of the Trivection oven that, in mid-2006, he replaced recently deceased Gary to become Vice President of East Coast Television and Microwave Oven Programming.Jack was the architect of bringing Tracy Jordan on board the NBC sketch show "The Girlie Show", despite the objections of head writer /creator Liz Lemon and producer Pete Hornberger.