I was updating my packages today when I found that the latest version of Nemo is available in synaptic suggestions. I am really fond of this default file browser from Linux Mint as it is pretty fast and provides option to use either decimal/binary prefixes for showing file sizes. I installed it immediately after experimenting a little on which packages are absolutely required for the minimal app to run.
To install Nemo, run:
$ sudo apt-get install nemo
It has many dependencies. I unmarked everything other than the following 3 packages:
and the installation worked fine. Finally! I can get rid of the crap Nautilus file manager on Ubuntu with an appropriate alternative (Marlin/PCManFM are good but still need a lot of work).