article_snippet: Will & Grace star Eric McCormack paid tribute to Eric McCormack friend, gym buddy and one-time co-star Shafer on Twitter .
article_snippet: Among those to pay tribute was Will & Grace star Eric McCormack, who trained with Shafer.
article_snippet: Eric McCormack wrote: 'Lost a good man today.
article_snippet: Sending love to Eric McCormack family and so many friends.
highlights_snippet: Tributes on Twitter include one from Will & Grace star Eric McCormack .