A couple of years after the show originally came to an end, Discovery tried to revive it but with a completely different crew running everything. It was terrible and Discovery ended the revived show after a handful of episodes. That's why the last few dots on the plot are all way down there, not just the final episode. As the revived show went, the finale wasn't really any worse (or better) than the others.

Also they Moved mythbusters from Discovery (basic cable) to a higher tier that included The Learning Channel and lots of other stuff I wasn't interested in fucking with the plan for - iirc this was the last two years. Discovery ran the new eps in re-runs later.