I'm trying to get our TiVo setup so that we can successfully switch between TiVo, the VCR, the DVD player, and be able to watch TV on one channel while TiVo-ing another. I've made a diagram of my proposed setup:

If anyone out there has experience with this stuff, I'd love some input on whether this setup will work as hoped.

Update: based on some feedback, I've changed my layout to send everything but the DVD through the VCR. Thoughts?