Here are some caps of the Sky-broadcast:
Raiders:
http://s6.directupload.net/images/091007/k5snfd2g.png
http://s2.directupload.net/images/091007/r2ldsalb.png
Temple:
http://s3.directupload.net/images/091008/osn73r9a.png
http://s8.directupload.net/images/091008/wk8pyt45.png
Crusade:
http://s1.directupload.net/images/091009/vp5jm52n.png
http://s3.directupload.net/images/091009/t5b4zar4.png
They all look somewhat filtered to me (the Crusade title screen is obviously an upscale from the SD-master... I guess there simply wasn't a German HD-master for Crusade), but the biggest problem (which probably only people from a few countries can comprehend) is the fact that "Raiders" got a complete German re-dub, which is a sacrilege! The German dub from 1981 is a huge part of the nostalgia around this movie, and although Indy and Marcus (sadly only those two) got the same voice actors from back then, they both sound about 30 years older now! Plus, all the other voice actors have been replaced. It' terrible! So, why did they do this? Because they wanted (or were pushed by Lucasfilm) to show the movies in 5.1 sound.
It's been a big point of criticism when the DVDs came out that the German tracks of all three movies were only in 2.0 surround, which sounded somewhat worse than the English 5.1 tracks. It was known that at least for Temple and Crusade the German 6-track magnet tapes from the film print did still exist, so 5.1 tracks could've been mixed out of those. So that DVD-release left a somewhat stale taste in German buyers' mouths. It looks like now they've gone all the way, because SkyHD showed film 2 and 3 in excellent new 5.1 mixes. Sadly it looks like there were no sources to make a 5.1 mix for Raiders as well, and so they re-dubbed it. I PRAY that they show enough decency to at least include the original dub (which now I don't care that it's "only" 2.0) on the Blu-Ray release... it'd be a nightmare if I have to watch the HD-version with that mediocre re-dub.