so i was trying to find a way to hide videos more than photos, but I've confirmed that my method works for both. This will make them easily viewed and sent, but will not appear in the gallery. All you'll need is Astro downloaded and pick two fake file extentions, one for video and one for photos...I used non for video and hah for pictures, and reference them as below.
1. create a folder through Astro (or when connected to your computer) named whatever you want. Mine is simply named Videos.
2. Within Astro, go to the preferences, and click edit file extentions. Add two new extentions, First one, for videos, would be non and the mime type is video. The second would be hah and mime type image. Leave subtype blank.
3. move all your photos/videos into that folder (if theres more than a couple, easier to use your computer for step 3 and 4)
4. Rename all photos with the .hah extension and videos with the .non.
They will not appear in gallery, but can easily be accessed within Astro. This will actually hide the pictures and videos from most non droid users even if they are computer smart. If you're worried more, than do the hide folder trick in Astro right before you hand over the phone.
hope this helps others hide there "naughty files" =)