Heres what im doing with my Hero:
+ Installing a dock for the Hero up on a living room wall or table.. and using Gmote on the HTPC and my server. This way the Hero will essentially work as a remote for both PCs, stay charged and on my WLAN. (You may ask.. why dont I just use the Evo w/gmote: In the scenario that Im on the phone... or replying to email etc.. someone else has the option to use the Hero as a remote.) Gmote will also take place of my wireless keyboard and mouse... and also replace my want of one of those Gyro mice.
+ Configuring GoogleVoice w/Skype via Gizmo5 on the Hero (voip phone). Im doing this mainly for my gfs sake; with Google Voice you can add many phone numbers to the account to ring at any designated phone. My gf usually has her phone silent (i have no idea why), and misses MANY calls from mutual friends... who end up calling my phone to talk to her. Since she spends most of her time in the living room.. i figured this would be a great solution.
+ House (living room) cam for parties and get togethers. Take pics and share them right then and there with everyone. Have apps of all sort for sharing (Bump). Digital cameras are great, but when you want to post or share something on the fly... using a smartphone works perfectly.
Again, most of you will probably ask.. why dont I use the Evo. The answer is.. I will already be using it aside from the Hero. It will still be my main phone, it will still hold the apps i use, where as the Hero will serve more purpose as a media aid at the house.
The way I see it is, most HTPC users go out and buy $100 wireless devices for their HTPCs or touchscreen remotes/panels... well.. the Hero is will do all of that plus some for me.