wrote:
I'm going to do some moving and I need to find one of those L-shaped
things with wheels on for moving fridges and freezers and stuff - but I
have no idea what its called or where to get one

Can anyone help?!

Thanks

Usually a sack truck.
But I got one called a "sack trolley", and it could be used on it's two
wheels eg. for moving a fridge, and also flat as a trolley, by means of
two extra wheels on the vertical section. Very useful and versatile.
Simon.