Cueshark, don't revise your opinion just yet...
I am embarrassed to admit that despite studying Geller for a decade or more I originally fell for the claim that Geller had been caught blatantly using a well known magicians' gimmick (a thumb-tip - google it) containing a magnet in order to move a compass on his TV show. The still shots seemed to show something on his thumb, plus he seemed to have been caught on camera putting said gimmick in place. I've since kicked myself for my naivety.
Put yourself in Geller's shoes for a moment. You've been moving compasses for over 35 years including ones similar to that seen in this clip. No sceptic or magician has ever suggested you employ a thumb-tip. What they have suggested is that you probably have a magnet concealed in your mouth. (A far better hiding place as it doesn't involve the well known magicians' gimmick, is unlikely to be searched and if need be you can swallow the evidence). I should add that the video, photographic and eye witness accounts of Geller's compass moving do circumstantially support the suggestion that he conceals magnets in this fashion.
Now, here you are on your own TV show, an executive producer of it with access to the props, plenty of rehearsal time and at least some control over camera angles and editing etc. So, as Geller do you:
A). Use the method that has served you well for over three decades, both in laboratories and on TV and which involves no visible gimmicks.
B). Abandon your successful method and instead use a gimmick that is phenomenally well known to magicians and put it on your thumb in a crass and obvious manner that no magician over the age of ten would be seen dead using, right in front of the cameras for the whole world to see. Further you then decide during the editing of the show to leave the evidence of your cheating in place.
Additionally, the thumb-tip that Geller supposedly uses in this clip is ridiculously large compared to those on the market and it has no need to be. These days magnets of sufficient strength to deflect a ships' compass are tiny and you could fit several in a normal sized thumb tip. What looks like Geller's elongated thumb in the original video is I believe a video artefact, as claimed. Besides which, close-up shots seem to show Geller's thumb looking perfectly normal, the over sized gimmick having magically vanished mid-trick.
Just after the original "Geller has been caught" video made the news magician Drew McAdam correctly predicted that Geller would move that same compass again the next week, but would take pains to show he had nothing on his thumbs etc. Lo and behold that's just what Geller does. Presumably using his tried and trusted method involving no visible gimmicks.
That leaves only a few possibilities:
1). Geller, (who despite any claims to the contrary knows what a thumb-tip is and how they are employed) decides to boost the viewing figures on his show by winding up magicians and sceptics with his blatant "look, I'm sticking something on my thumb" gesture; well knowing how that gesture will be interpreted by those supposedly 'in the know'. Returning the next week to disprove those silly theories. This I believe to be the most likely option.
2). The reaching behind his ear then grasping his thumb was a casual and innocent gesture, misinterpreted by others then capitalised on by Geller.
3). During rehearsals Geller found his normal method (foolproof for over 35 years) wouldn't work so he improvised by attaching a magnet to some flesh coloured sticky tape which he concealed behind his ear for the performance. It certainly wasn't a thumb-tip for the reasons noted above, plus you can't hide them behind your ear, they're too big. This doesn't hold much water as modern ceramic magnets are more than capable of deflecting such a compass when hidden in the mouth or hair etc. and if in doubt you can use two of them. This scenario also leaves us with the question as to why Geller would use such an obvious and visible method to put it on his thumb in the first place and why that gesture made it through the editing onto the televised show.
All in all I suspect that Uri has had the last laugh over this one.