arcpy - How to make a GIS inventory?

My office will be seeing a big change in its GIS section. This section has been operational since the 1980's and has a huge collection of GIS data (i.e., shapefiles, raster files, data, etc) but never been through any inventory. Now it will happen.

Is there any automated way to extract all the information about the GIS data (i.e., shapefile, arc-info coverage, layer file, *.mxd, gdb, raster file, and more) from a PC to an Excel file? The information may include date of creation, date last edited, folder or container name, etc.

Answer

Thanks artwork21 and Nathan W for your response. And yes Nathen's code made the magic.

import os, arcpy

#create blank text file
with open("C:\\Temp\\GISlayers.txt", "w") as txt:
for root, dirs, files in os.walk("C:\\Temp\\temp"):

    for f in files:
        #look for shapefiles
        if f.endswith('.shp'):
            desc = arcpy.Describe(root + "\\" + f)
            #write info to text file
            txt.write(desc.name + "," + desc.catalogPath + "\n")

        #look for file geodatabases
        if f.endswith('.gdb'):
            desc = arcpy.Describe(root)

            for child in desc.children:
                #write info to text file
                txt.write(child.name + "," + child.path + "\n")

        #look for layer files
        if f.endswith('.lyr'):
            desc = arcpy.Describe(root + "\\" + f)
            #write info to text file
            txt.write(desc.name + "," + desc.catalogPath + "\n")


        #look for img file
        if f.endswith('.img'):
            desc = arcpy.Describe(root + "\\" + f)
            #write info to text file
            txt.write(desc.name + "," + desc.catalogPath + "\n")

Only file name, and location. The pc i'll be working with has lots of coverage (the arc-info file) file, will it work on them too?