Honestly, out of all the flashes Randy has done for the site, I feel Rise of the Mushroom Kingdom was definitely one of his more famous ones and it's easy to see why. The music is epic, the cinematography is put at its' best and the emotions are very strong. If there was an Oscar for outstanding flash series, this would probably win hands down.
My condolences to the Solem family, he will be missed and remembered forever through his work here on Newgrounds.