Dharma mentions she has money saved up from when she toured with ZZ Top. Jenna Elfman actually did tour with the rock band ZZ Top on their 1994 tour as a "Legs Girl" earlier in her career.
In this episode, Dharma mentions she used to dance for ZZ Top. Guest star T.J. Thyne dates the fictional daughter of ZZ Top's Billy Gibbons when starring on the series Bones.