WEBSITES OF THE TARENTAISE

All of the resorts have their own sites of course (my favourite is www.pralognan.com). The Les Arcs official site looks quite smart, but loses marks for not being kept up-to-date.  For example (on 27/12/11) the link to the piste map is for 2010/11 rather than the new 2011/12 version.  Here are some links to some other places on the web:

For Les Arcs: www.espace-arcadien.fr.  The content is a tad out-of-date, but has good links to local webcams.

Also for Les Arcs: www.lesarcs.net will sell you chalet/apartment accommodation, but has lots more.

Finally, a bit more of a collector's piece: the Les Arcs film festival.  Oh yes.  There's still a bit of a debate about whether the investment has been worth the while (the idea was to extend the season, as part of a more "diverse" offer of activities....)

For La Plagne: www.perso-laplagne.fr.  This is a great site - lots about new developments, history of the resort, etc etc.  La Plagne fans who don't speak French will still enjoy the pictures.

For the weather: Meteo France.  This is the local forecast, with "previsions" for the next few days.

For getting excited/depressed about local snow conditions: www.snoweye.com.
This has just about every resort in Europe, with various cameras in the big reports...

For cycling: www.grenoblecycling.com.  This is based further down the Isere valley, but includes descriptions of most of the main cols in the area.  Recent posts include video, which makes it doubly exciting.

To improve your French: www.bourgstmaurice.tv was set up this year by an enterprising local.  And the regional newspaper www.ledauphine.com is worth a browse/a follow on Twitter.