Tony Goldwyn was the first of four Season 9 guest stars who would star in "Scandal" (TV Series 2012 - 2018). The other guest stars were Dan Bucatinsky in "The Proposal," Bellamy Young in "Three Blind Dates," and Jeff Perry in "War of the Words."
Although Roger appears to be an ideal mate for Roz, and is on good footing with her by the end of the episode, he's never seen again, and only referred to by Roz in decreasing frequency.
When Frasier puts his foot down about the possibility of a friendship with Noel and his office mates, they cast actors who are significantly shorter than Kelsey to emphasize his snobbish attitude.