Battlestar Galactica - Has it 'Jumped the Shark'

The new Battlestar Galactic has been one of my favorite television shows of the past few years and perhaps ever, but has it finally jumped the shark?
Spoilers will follow, so don't read ahead if you are not caught up with the show and hope to watch it.

Battlestar was and is extremely well done. For a long time I thought the strength of the show is it didn't have to be a sci-fi show, it could have been set in another time and place and the elements that made it strong would have worked with minimal adjustment. The storytelling and acting was fantastic. While these elements remain strong, the show has gone further and further from it's roots. At the end of the 3rd season 4 Galactica crew members hear the Bob Dylan song 'All Along the Watchtower', representing that something has 'switched' in their brains and now they know there are Cylons? What!?! This has subsequently been explained, but I never fully bought it. There has been good stuff since that point in the show, some great stuff, but it was too far fetched on many different levels.

Everyone started wondering who is the 5th and Final Cylon. This is interesting, but none of this is what made the show interesting at the outset. We know who it is now and we found earth (which was very cool) and where are we headed now.

I'm not sure and the show could redeem itself by the end, time will tell.

Don't get me wrong, this remains one of my favorite TV shows and I'll watch it to the bitter end, but I think it may have lost a bit of it's luster. Ever since the end of the 3rd season when the four of the final five were revealed to be Cylons, it really lost something. My suspension of disbelief was pushed a bit too far. It's lead to some great stories as a result, but it's not quite the same.