Around this time , Walt dated his lab assistant , Gretchen ( Jessica Hecht ) .
After graduate school , Walt founded the firm Gray Matter Technologies with Elliott Schwartz ( Adam Godley ) , his former classmate and close friend .
Around this time , Walt dated Walt 's lab assistant , Gretchen ( Jessica Hecht ) .
After graduate school , Walt founded the firm Gray Matter Technologies with Elliott Schwartz ( Adam Godley ) , his former classmate and close friend .