Podcasts are a great way to consume information and entertainment. I use BeyondPod Pro to track, download, and listen to my favorite podcasts.
I listen to podcasts on my Nexus 5 during commutes and when I go running. I estimate this accumulates to around 12 hours per week. The total time is randomly divided between podcasts, audio books, and music. I estimate podcasts get about 5 hours per week. I usually listen to podcasts at 1.5x speed.
This post lists my favorite podcasts, as of December 2014. The list is taken from the BeyondPod Smart Playlist, which reflects the order and precedence of listening.