What a bunch of garbage. Of course if you take samples willy nilly without proper screening for contamination, etc. you're going to get inconsistent results. (Almost always values which are lower than the actual ages.) The major part of the education of a radiometric dating professionals is concentrated on selecting and screening samples which will yield accurate results. Creationists like to assume that they know more about the ins and outs of radiometric dating than the professionals do, when in fact, said creationists actually know just enough to confuse themselves. (A little knowledge is a dangerous thing.) It's a classic Dunning-Kruger Effect.
Anyway, anyone who watches this disingenuous and deceptive video owes it to him/her self to check it against a more reputable source:http://ncse.com/rncse/20/3/radiometric-dating-does-work
which pretty much blows the young earth creationists' assertions, out of the water with facts. Of course, in this particular case, it's a matter of Mason willfully and knowingly attempting to deceive, which is rather worse than Dunning-Kruger. And doesn't seem very christian, if you ask me. Shame on you, Mr. Mason.