Following on from one of the first posts about adjusting properties for multiple objects:
If you have loads of different objects selected (especially different types) the ‘explorer selected’ button will often not give common properties (like visibility) and will defintely not give properties only common to some of the items.
To get around this open the specific property dialog box (eg Geom Approx) you want to view before selecting multiple items. The proprties dialog will switch to displaying the property if it exisits on any (doesn’t need to exist on all) object. Very handy if you select lots of items and accidentally select some you didn’t intend to.
Also on the same line - use the spreadsheet! - it is very very handy - but don’t go anywhere near the ‘name column’ it is very very easy to rename all the objects in your scene hand1, hand2, hand3, hand4 … hand257 if you happen to have everything selected then highlight one single object (you will know what I mean if u’ve done it).
The spreadsheet is however is very handy for checking high poly counts on objects - and over-exuberant use of the subdivide keys. Anything that you need to apply to lots of objects or see an at a glance overview of objects.
On the subject of high poly counts - it is very useful to have the Scene / selected polycount display in the viewport. Pick the eye in a particular viewport and select ‘Visibility Options’ and look in the visual cues tab. If you havent done so already have a look through all the tabs there as there are some handy tools to have on-screen.
Hope my first post was a little bit of use.