The unified inbox was fantastic. It lets you communicate with people, not worry about modes of communication. Here are a few example scenarios:
-Someone writes me on my work e-mail address, but I want to move the conversation to my personal e-mail. I just select the e-mail address I want to send from on the message screen. Doesn't matter where it came from, I can send a reply with any account I want.
-Someone texts asking me to call them. While the text is still on the screen, I hit the menu key and click "call." 2 keystrokes to make a phone call while looking at whoever sent me a message. Same for e-mails in my inbox.
-Suppose I got an e-mail last week from someone who said they were thinking of going to a show, but I can't remember the details. I scroll down the inbox, find the message, see that the show is tonight, and want to find out if they're still going. With the email still on the screen... Menu -> Send SMS. Or Menu -> Call.
You don't have to bother with switching around between programs to communicate with people. You just communicate. Blackberry will be the king of fast, efficient communication for quite some time.
Anyway, I actually brought home a G2 today. There isn't a single inbox like there is on Blackberry. And that's OK. I'm getting used to using separate programs for texting, emailing and such. It's not nearly as elegant as Blackberry, but I'm enjoying the wide variety of apps and I intend to start writing some myself.