Charles is great. I use it for debugging HTML5 and iPhone apps in low/no connectivity situations.
I've been with Linode for about 6 years. In that time I believe I've suffered one outage outside my control with them. They're reliable, knowledgeable, and selling a stellar product for decent prices. I have some qualms with their storage sizes, but otherwise the bee's knees.
I don't think I could operate effectively without this application anymore. Secured personal data at hand on my computer and iphone, random differentiating passwords across all web services. Good browser integration, mobile, nice UI and support from a pleasant company.