For small/lighter packages you're better off with First Class [1 or two dvd's, one or two games]. Or even priority mail, since you can get supplies free.
However, I ordered a bunch of DVD's from an etailer, and they sent me 13 in one box Media Mail--the postage cost something like 2.50, whereas I don't know how much 1st class would have cost.
I've not had a problem with Media mail, but I generally ship stuff first class anyway, since it's not much more, if at all.
Weird thing--went to a post office the other day, a very busy one that I don't normally go to. They said you had to hand your Media Mail package to theM UNSEALED....I guess so they could 'make sure' it was actuallly media mail. Wow....And I recall someone saying they got in an argument with their PO who said a video game wasn't 'media' [which to me it totally fits the definition.] Of course, there's also a lot of people using UPS or FedEx for personal packages, since they probably aren't that much more expensive and specialize in packages.