<P> Mr. Adam (Adam Conway) is a familiar face around the school . He is a teacher who occurs frequently throughout the series . He frequently serves as a study hall teacher, although he appears as a substitute teacher on the episode "Substitute Teachers ." When the students try to give him long explanations he looks at them as if he doesn't care . He appears to be more laid back, if not the most laid back faculty member at Polk . He is usually always seen along with a big group of other faculty members . </P> <P> Miss Knapp (Ellen Albertini Dow)--The elderly social studies teacher who always likes to sleep, as her name implies . Her replacement is Mr. Pal, the school's former principal . </P> <P> Nigel Hattorff (Nolan North)--The art teacher who speaks with a German accent and has a hairstyle similar to that of Coconut Head . He is based on Andy Warhol . </P> <P> Mr. Weiner (Marc Weiner)--A substitute teacher who used to be Ned, Moze and Cookie's elementary school substitute . He has saved Ned from the girls' bathroom three times . He tries bringing his little grade school skits with him (including a large walrus with help from Ned) to Polk to make his students laugh . He is seen only in "Substitute Teachers". </P>

Who plays the art teacher in ned's declassified