Possible Clues:

• Harold's film partner
• Harold's friend, in a 2004 movie
• Harold's friend, in film
• Harold's friend, on film
• Harold's movie pal
• Harold’s pal in three films
• Movie pothead
• 'Harold & -- Go to White Castle' (2004 comedy)
• Harold's movie bud
• Title film character whose last name is Patel