Just catching up on all this, I've been on holiday. 

My memory is there was a Sunday Service devoted quite heavily to Savile when he died - as others have suggested, there was probably a lot of stuff across the BBC. The only thing I remember about it was apparently Savile was one of the first DJs to use 2 turntables to mix music together. I looked in the archive and the episode of 6 Nov 2011 is completely blank with no title only the date - I wonder if that was the one as all the others are very thoroughly documented. Although a  lot of people profess to having felt Savile was really creepy, no-one appears to have really known anything definite. He never made a secret of "liking the ladies" and always had teenage girls hanging off his arms on Top of the Pops. Plenty of men are very open about enjoying sex, but you just assume it's with consenting adult partners. Savile obviously took most of the people in most of the time. He had a children's programmed on Saturday teatime BBC1 for half the seventies, making kid's dreams come true. I've wondered since we found out what we now know, was that just a completely cynical way of getting to kids, or did he have some kind of genuine love for kids that got warped in some horrible way somehow. People are complicated and multi-dimensional things and just because they do some awful things doesn't necessarily mean that everything they do is evil. He also got knighted and was very matey with Maggie Thatcher through all his children's hospital charity work, which we now know was where a lot of the most sickening things happened. I just had a look round and apparently they can't take his knighthood away after he's died. But they have dismantled the fancy headstone where he was buried in Scarborough with great fanfare at the time (http://www.telegraph.co.uk/news/uknews/9596698/Jimmy-Saviles-4000-gravestone-to-be-dismantled-following-allegations.html). There's also the fact the seventies culture was much more sexist generally than today and a lot of behaviours that seem very inappropriate to us today were fairly normal then and wouldn't have attracted attention. Liz Kershaw has certainly talked about being groped working a Radio 1 and blokes wondering what was the matter with her for complaining about it. Some of the others mentioned in other posts came across as likeable entertainers - Rolf Harris painted a portrait of the Queen! There was a TV programme about it, him chatting away to her while he painted. I used to always listen out for Stuart Hall's football reports on a Saturday afternoon, the highlight of Sports Report. I don't really know anything about the psychology of abusers, but there seem to be an awful lot out there, who given any position of power will use it to exploit the vulnerable. Think of all the reports of children's homes, sports coaches, religious organisations of all kinds, almost anywhere. It's all done in dark and hidden places leaving people around completely unsuspecting.

So from Jarvis' point of view, he probably formed much the same kind of impression as many other people and saw some intersting musical dimensions in Savile's DJ career and is probably as horrified now as many other people who produced tributes at the time. But most people were taken in by Savile and the others, not just Jarvis.