Its hard to believe that its now been two years since the Harry Potter film franchise concluded with the release of its eighth and final entry. The series was notable for being populated by a wealth of British acting talents, ranging from newcomers such as the leading trio of Daniel Radcliffe, Rupert Grint and Emma Watson to renowned thespians such as Alan Rickman, Maggie Smith and Gary Oldman. Even minor but memorable roles were predominantly filled by actors who were well-known at the time of casting or became known soon after, including the likes of David Tennant, Peter Mullan, Julie Christie, Toby Jones and Robert Pattinson. Other miniscule roles involving just a few lines or seconds of screen time were more forgettable, though even they at times were filled by individuals known for their work on other film or television productions. Twenty such people with blink-and-youll-miss-them appearances are subsequently profiled on this list in no particular order, as the franchise they were a small part of continues to enjoy enduring popularity through the likes of Pottermore and the WB Studio Tour, amongst other things. In a footnote plug, if you enjoy the concept of this article, be sure to pay a visit to a similar piece I wrote on minor appearances by well-known individuals in the James Bond series.