Who Should Play Beorn in The Hobbit?

[Lord Gothmog]

Futher information from Tolkien's Letters

From Letter 144

Beorn is dead; see vol. I p. 241. He appeared in The Hobbit. It was then the year Third Age 2940 (Shire-reckoning 1340). We are now in the years 3018-19 (1418-19). Though a skin-changer and no doubt a bit of a magician, Beorn was a Man.

Hope that helps