[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     encoding.n    foreach.n  linsert.n    pwd.n       subst.n
 append.n    eof.n         format.n   list.n       read.n      switch.n
 array.n     error.n       gets.n     llength.n    regexp.n    tell.n
 bgerror.n   eval.n        glob.n     lrange.n     registry.n  time.n
 binary.n    exec.n        global.n   lrepeat.n    regsub.n    trace.n
 break.n     exit.n        http.n     lreplace.n   rename.n    unset.n
 catch.n     expr.n        if.n       lsearch.n    return.n    update.n
 cd.n        fblocked.n    incr.n     lset.n       scan.n      uplevel.n
 clock.n     fconfigure.n  info.n     lsort.n      seek.n      upvar.n
 close.n     fcopy.n       interp.n   namespace.n  set.n       variable.n
 concat.n    file.n        join.n     open.n       socket.n    vwait.n
 continue.n  fileevent.n   lappend.n  pid.n        source.n    while.n
 dde.n       flush.n       lassign.n  proc.n       split.n
 dict.n      for.n         lindex.n   puts.n       string.n
'''Files without examples:''' 
 Tcl.n       history.n  memory.n   packagens.n   safe.n     unknown.n
 case.n      library.n  msgcat.n   pkgMkIndex.n  tcltest.n  unload.n
 filename.n  load.n     package.n  re_syntax.n   tclvars.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: 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]