It takes a suprisingly strict set of requirements to get good lens flare on my GS2. I had some pretty good pink "flower petal" flare on some shots up in the mountains, but the sky was completely washed out. I also had a pretty cool shot with a purple halo similar to this one, but again the sky is white. This is the only one where I got some decent halo flare and retained the sky. As I remember, the sun was partially hidden behind a cloud when I took this shot.
Also, to Jerry's comment about not seeing many pictures with lens flare (
http://www.androidcentral.com/weekly-photo-contest-purple-haze-lens-flare)... I typically consider a shot with lens flare to be a mistake and it gets deleted on the spot and the picture retaken with more care taken to either shield the lens or reposition so the sun is behind me. I had to shoot these pictures specifically for this contest this weekend as I didn't have a single one in my collection with any lens flare. I guess there is a little artistic interest in the pictures I got, but I don't feel that the flare really adds anything to any of the pictures aside from a "huh.. that's interesting" and even that feeling is short lived. I might try this again from time to time, but won't be a technique I try very often.
With that said, I do find some muted sun in the background (especially peeking through trees or clouds) can add alot to a picture if it's done right. And again, that's always meant that I eliminate strong lens flare while retaining the neat lighting effect. For example, in the picture I posted, I probably would have cut back a little on the angle of the sun and got a lighter "ray" effect instead of a full out flare. Frankly, I'm not seeing any pictures posted here where the lens flare added value to an otherwise solid picture.
rookie83 posted a very nice picture on the first page where the sun definitely adds value to the picture and is a good example of how reducing the intensity of the light really helps add value. vividrich's cat picture on page three is a perfect example of no real lens flare, but a fabulous lighting effect. biictorr's post early on the first page is another good example where the sun is doing some awesome things, but the picture would have been even stronger without that pink flare blotch (still a very cool picture). biictorr, if you read this and know how to reproduce that effect, please post an explanation.
Anyway, that's probably too much reflection (ouch, pun) on what was just meant for fun. Great job creating all kinds of goofy looking flare folks
