DirecTV offers new subscribers a DirecTV Now 1-Month Trial for free via coupon code "RULESFREE9". (It typically only offers a 7-day trial.) This works for any plan, so pick the 120-channel "Gotta Have It" option, which normally costs $70/month, to get the most out of the trial.

Note: Make sure to cancel your subscription before the trial period ends to avoid being billed if you don't wish to continue the service.