This is curious: Carmike was a founding partner at Fandango, and last year the companies announced that they had extended their “multi-year strategic agreement.” But it appears that deal wasn’t exclusive — and Carmike wants another option. Today the chain says that it will also use Fandango’s chief rival, MovieTickets.com, to sell tickets online. Carmike is “delighted to forge this new alliance with MovieTickets.com,” the exhibition chain’s CEO David Passman says. “Carmike patrons appreciate flexibility in their advance ticket purchasing and we are pleased to be adding MovieTickets.com.” It’s highly unusual for a chain to offer two online sales options. The Boca Raton-based digital operation already serves the Rave theaters that Carmike recently bought. The new agreement will soon add Carmike’s 2,200 other screens. This is “the single largest domestic addition to our screen count since the company was founded in 2000,” MovieTickets.com CEO Joel Cohen says. “Carmike is highly influential in our industry, we are pleased they chose to join our program and collectively work with us to improve the movie going experience.”