What actor from "How I Met Your Mother" performed with Timothy Nolen?
Timothy Nolen:  He then performed the role of Judge Turpin in a concert version of "Sweeney Todd" broadcast on PBS's "Great Performances" in 2000 with the New York Philharmonic, George Hearn, Patti LuPone, and Neil Patrick Harris. Neil Patrick Harris:  On television, he is known for playing the title character on "Doogie Howser, M.D." (1989–1993), Barney Stinson on "How I Met Your Mother" (2005–2014, for which he was nominated for four Emmy Awards), and Count Olaf on "A Series of Unfortunate Events" (2017 onward).
Neil Patrick Harris