Finder's Path Bar
I don't know how long this has existed (maybe I've just been blind), but the Finder's been hiding this excellent Path Bar which shows up at the bottom of every Finder window and basically shows a hierarchy leading up to the folder you're currently in. Activate it by choosing the "Show Path Bar" option from the View menu.
iPhone 2.0: Remote
The Remote is one of Apple's own applications rolled out for free over the App Store for the new iPhone software and it is absolutely brilliant, with an amazing user interface and flawless integration. It's the best iPhone application I've used yet and I just love it! It sets the perfect example of an iPhone app. In this particular case, only Apple could have made the integration really seamless, because it required some changes in iTunes as well, so this Remote only works with iTunes 7.7 and later, if I'm right.
iPhone 2.0: Hindi
Even though it doesn't join the letters correctly, apart from making me extremely happy, it finally means that, using with iTunes' "Sort" fields, I can get rid of the Latin characters in my Hindi song name titles.
Adobe recently came out with a beta of Flash Player 10, which is supposed to bring major speed enhancements to the Mac version. Although I will wait until the final version before installing it, this would be a welcome change indeed.