Originally Posted by
jeff10000
I'm just kinda worried that if they see I've entered Japan they will send out my bag on the carousel and I wont know to look for it.

If your checked bag is tagged for TPE in the US, it will be routed to the TPE flight when you land at NRT. I can only think of two likely scenarios in which your bag won't be on the plane to Taipei:
(1) The airline loses your bag
(2) You fail to show for your TPE flight and the bag is offloaded
Therefore, as long as you show up at the gate on time and board your plane, I think you're fine.