Jacob Lewis
Ye Olde GM
High Aldwin from Willow. Magic acorns anybody?

Do not forget Chuck Norris in Forrest Warrior
Getafix (Asterix) is clearly the best druid, check out the beard. NB there have been a number of movie and TV adaptations of Asterix, so it does count.
NB Panoramix in French.
Merlin (The Sword in the Stone 1963) is a good example of a wildshape druid. And also has an epic beard.
It's quite common for Merlin to be identified as a druid rather than a wizard.