Wow, we're having fun with this. Rosetta Stone has a free 7-day on-line demo for homeschoolers. You can sign up until today only. You can choose any of 21 languages to try the demo in, with all levels available. Fiona and I have been trying Japanese, Sophie is using French and Noah has decided to check out the German program. Unfortunately although they have a Thai program, it's not part of the free demo, so Erin is out of luck.
We used to have a PowerPack sampler years ago and were mighty impressed, but the newer version is better still. I've been working hard on Japanese and am now about a quarter of the way through Level 1. Each level would be considered roughly equivalent to a one-year high school course -- not bad for three days. I had learned (and then mostly forgotten) how to read hiragana last year thanks to the SlimeForest Adventure game, and knew a few words and phrases, so I wasn't starting totally from scratch, but pretty close!
So the next question is which languages we'll buy in the new year when the next intallment of the kids' learning allowance comes through from the SelfDesign program. Sophie has had RS French on her wish list for a few months, so that's a pretty much fer-sure. We'll have to see how enthusiasm holds up for the rest of us.