I've been noticing a lot of positive headlines on io9 for Warehouse 13.

1. Should I watch it?

2. Should I skip anything?
Shows with a lot of seasons freaks me out and intimidates me a little. Is every episode crucial?

3. Are there are a lot of non-direct plot (character story) related episodes? I remember when I first started hearing about it, the csi, stand-a-lone episode format kinda turned me off. Then again, x-files and early fringe. So, iunno.