Conan O'Brien's 'Legally Prohibited from Being Funny on Television' Tour might be a once-in-a-lifetime event, but that doesn't mean it isn't bound by the laws of concert tours.

Those are the unspoken laws of live entertainment physics that affect every staged entertainment venue across the globe. And just like actual physics, they are cruel mistresses with no pity for people who dare to challenge them or go outside their boundaries of motion, inertia and box office receipts.

As Conan O'Brien prepares to take the stage tonight to kick off his live comedy tour, word has come that negotiations between the erstwhile late-night host and Fox are progressing nicely, leading to broadening speculation that O'Brien could find himself back on the air within the year. There's just one hangup: Many Fox affiliates don't want him.

That, according to the Hollywood Reporter, is now the biggest obstacle remaining in a proposed deal between O'Brien and Fox. At issue is the fact that most affiliates will be required to pay a higher retransmission fee to the network, since they will be gaining additional content -- content that may not be as profitable as the low-cost syndicated shows and reruns most affiliates currently air in the proposed 11PM time slot.

As expected, Conan O'Brien is taking his show on the road.

O'Brien, who was booted from the 'Tonight Show' at the end of January, will headline the 'Legally Prohibited From Being Funny on Television Tour,' beginning Apr. 12 in Eugene, Oregon, according to his Twitter. The 30-city tour will feature additional stops in New York, Los Angeles and Chicago, among others.

No word yet on whether Twitter BFF Sarah Killen will attend.

For full details on the tour, check out PopEater.