Windows 7:: My Take...

Processor: Intel Pentium M processor 1.70 GHz 
Memory(RAM): 2.00 GB
System Type: 32-bit Operating System
Memory(Hard Drive): 16.5 GB
Time for Installation: 40-45 mins
Memory used for Installation: 8.5 GB

Start-Up time: 45-50 seconds

Installed Software:

  Mozilla Firefox
  Opera
  VLC player
  7-Zip
  Adobe Reader 9
  Avast Antivirus
  CCleaner
  Picasa 3
  PowerIso
   

What I liked most:

Not using much resources
Gadgets free to move around
Aero Peek
Faster Response time
And most of all it's not Vista

Cons:

Still being in BETA
buggy in playing some video files

On the whole it has been a smooth ride till now except for one or two bumps. I had been waiting for this God sent Operating system from a long time and it hasn't dissapointed me in any way. It is too early to come to a conclusion on how good this OS is, but let me tell you one thing Windows is here to stay....