I've had my iPhone for almost a year and have downloaded countless apps for it since then. However, there are a few "must have" apps that I would be hard-pressed to live without.

Twitterrific. Loads of great features, easy to use. No complaints at all. I love this app.

ESPN. I can't remember if this is a downloadable app or just an iPhone-optimized website, but either way its the app I use the most, no question. If you're into sports and you don't have this on your iPhone, get it now!

ESPN Scorecenter. What can I say? I'm a sports information junkie!

Byline. Excellent app for reading RSS feeds subscribed to from your Google Reader account. Simple, but elegant.

Super Dial. One-touch dialing for the numbers you call most.

I use every one of these apps every single day. Without them my iPhone experience would be somewhat unfulfilled.

It goes without saying (I hope) that these "can't live without 'em" apps are in addition to the ones that come with the phone, like Maps, Safari, Phone, Camera, Mail, Calendar, etc.

What about you? Any apps I should consider adding to my "must have" list? Do tell.