108-Wallace revisited
I dont think anyone mentioned this possibility:
Recall that 108, the number to which Hurley was supposed to turn the wheel in the lighthouse, bore the crossed out name, “Wallace”. According to Lostpedia, the novel A Wrinkle in Time (which appears on Sawyer’s dresser in “Recon”) has a character named Charles Wallace. This Wallace is psychic, messes with time, and appears as an evil cloud called The Black Thing.

Swish! Nice catch…