It's easy to forget that Orlando Bloom was only 21 when he landed the role of the beached-blond pinup elf Legolas in 2001's epic The Lord of the Rings: The Fellowship of the Ring, a vehicle that made him, for a time anyway, one of the world's biggest movie stars. What followed was a succession of leading-man turns, mostly in period and fantasy films (Pirates of the Caribbean, Troy), that further cemented his status as Hollywood's ubiquitous of-another-era heartthrob. "I was definitely aware…