According to the ages given in this episode, Jeff was 19 in 1997, Annie is 19 in the present (2011), Magnitude is currently 16, meaning he was born in 1993-1994, while Pierce was born in 1944-1945, which is later confirmed in the season 3 episode "Regional Holiday Music". However, in "Mixology Certification", Annie is revealed to be born in December 1990, which means she would be 20 in March 2011. Also, in "21st Century Romanticism", Jeff's birth date is given as November 20, 1971, meaning he would be 25-26 in 1997.
During Jeff's bio screen, it has the category "KYPTONITE" when it should be spelled 'Kryptonite'.