No. Eric McCormack who played the role of Will Truman in the TV Series Will & Grace did not appear in Criminal Minds. See full cast of the TV Series Will & Grace on IMDb.
Actor Eric McCormack had his first taste of TV success in his native Canada with the series Lonesome Dove, which aired in the mid-1990s. He went on to achieve fame and acclaim for his starring role in the popular sitcom Will & Grace from 1998 to 2006.
View Eric McCormack filmography on IMDb.
In latest buzz, while some TV shows have recently promised that they will stay out of politics during these politically-charged times, “Will & Grace” is going in the opposite direction.
The sitcom, which returned to NBC on Thursday night after a decade-long hiatus, doubled down on the political jokes, mainly aimed at President Trump. The set-up is that Karen (Megan Mullally) is obviously a Trump supporter and best pals with Donald and Melania. Will (Eric McCormack) and Grace (Debra Messing) are horrified by Trump’s presidency. As for Jack (Sean Hayes) … well, he’s too busy flirting with Secret Service agents to weigh in either way. Read more at Washington Post.