[davidw]: It would be nice to see at least a simple example included for all Tcl man pages (or at the very least point to another page including an example).

Here is the current state of things:
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'''Files with examples:'''
 after.n     exec.n       global.n   lindex.n    lset.n    seek.n     upvar.n
 append.n    fcopy.n      http.n     linsert.n   lsort.n   set.n      while.n
 array.n     fileevent.n  if.n       list.n      open.n    socket.n
 bgerror.n   for.n        incr.n     llength.n   puts.n    split.n
 break.n     foreach.n    interp.n   lrange.n    read.n    subst.n
 catch.n     format.n     join.n     lrepeat.n   rename.n  switch.n
 continue.n  gets.n       lappend.n  lreplace.n  return.n  time.n
 encoding.n  glob.n       lassign.n  lsearch.n   scan.n    uplevel.n
'''Files without examples:''' 
 Tcl.n     eof.n         flush.n      packagens.n   safe.n     unset.n
 binary.n  error.n       history.n    pid.n         source.n   update.n
 case.n    eval.n        info.n       pkgMkIndex.n  string.n   variable.n
 cd.n      exit.n        library.n    proc.n        tcltest.n  vwait.n
 clock.n   expr.n        load.n       pwd.n         tclvars.n
 close.n   fblocked.n    memory.n     re_syntax.n   tell.n
 concat.n  fconfigure.n  msgcat.n     regexp.n      trace.n
 dde.n     file.n        namespace.n  registry.n    unknown.n
 dict.n    filename.n    package.n    regsub.n      unload.n
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These are automatically generated (script below).  Some of these do have examples, such as msgcat and tcltest.  Others sort of do, but a functional bit of code that runs and demonstrates the command is always welcome.

'''Exception List''': The list of files that really do have (good) examples: binary.n msgcat.n tcltest.n.

and the list of files that describe commands that are too simple to really need examples (or that have them elsewhere): cd.n close.n

The following files probably don't need an example: Tcl.n, case.n, filename.n, library.n, packagens.n, re_syntax.n, tclvars.n (and perhaps safe.n too)
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Adding an example doesn't take much time, and lots are already available on the wiki.  All you have to do is submit a patch to sourceforge.  The man page markup looks like this:

 .SH "EXAMPLES"

 A time server:

 .CS
 proc Server { channel clientaddr clientport } {
     puts "Connection from $clientaddr registered"
     puts $channel [clock format [clock seconds]]
     close $channel
 }

 socket -server Server 9900
 vwait forever
 .CE


I used this code to check:

 package require fileutil
 package require struct

 foreach res [fileutil::grep ".SH.*EXAMPLE" [glob *.n]] {
     lappend examplefiles [lindex [split $res :] 0]
 }
 set examplefiles [lsort $examplefiles]

 set allfiles [lsort [glob *.n]]
 set noexamplefiles [lsort [struct::set difference $allfiles $examplefiles]]

 puts "Files with examples: $examplefiles"
 puts ""
 puts "Files without examples: $noexamplefiles"
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[DKF]: Remember that some [Tk] docs need examples as well, though I'd tend to say not the widgets, as they're better demonstrated as part of the general [widget] demo.

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[AM] What about Wiki pages that show a particular package in action? I mention it here because it seems a nice starting place for it ... For instance:
   * the http package is nicely illustrated with the page on the [wiki-reaper]
   * [A little Unicode editor] might serve as an illustration for dealing with Unicode 

[DKF]: I'm trying to keep examples ''very'' short.  Both of those pages are several times too long for my current limit.
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[Category Documentation]