The celebrity caller in this episode is Eric Roberts (Chet), a once-timid man who takes Frasier's (Kelsey Grammer) advice about assertiveness too far and becomes an overbearing jerk.
In this episode Niles (David Hyde Pierce) says Maris never goes on cruises because she has a fear of buffets. Yet in both the Season Three episode Moon Dance (1996) and the season five episode Voyage of the Damned (1997), Maris does indeed go on cruises.
The caller Chet calls in saying he's calling from Whidbey Island, an island at the north end of Puget Sound. The island serves as a bedroom community to the nearby cities of Everett and Seattle and is home to Whidbey Island Naval Air Station.
James Earl Jones plays a blind man in this episode. He also famously played a blind man in The Sandlot.