What's a good Android app for downloading videos from the internet so I can show them to my students even when the school Wi-Fi is acting up, which, let's be honest, is most of the time?

Alright, so I've been messing around with this Video Downloader HD - Vidow app, and it's actually pretty useful for a guy like me who's not exactly a digital native. I needed something to download videos ahead of time, you know, because the school Wi-Fi is about as reliable as a teenager's promise to clean their room. It took me a few days to figure out all the features – why do they hide the settings button there? – but once you get the hang of it, it's surprisingly intuitive. My students actually showed me a trick or two! Basically, you can download videos from different sites, and then play them offline. I use it to download documentaries and educational clips for my history class. It's like having a teaching assistant in your pocket, except this one doesn't ask for a letter of recommendation. Even I could figure it out, so that's saying something. Just be careful out there, make sure you're only downloading stuff that's, you know, okay to download. We don't want any copyright issues!