How about:

   bpimagelist -U -hoursago 99999 -client <clientname>|head -3|tail -1

That is, bpimagelist outputs images ("successful" backups) with most 
recent first.  "head" takes 1st 3 lines of output and "tail" throws away 
the 1st two (header) lines, leaving the most recent backup line, that 
might look like this:

   08/24/2005 21:49  09/21/2005    13496   809836  N  Cumulative I 
SomePolicy

Of course, that doesn't say all the files of interest were backed up, 
nor is it of much usefulness if a client is covered by more than one 
policy, or if files are excluded/selected according to schedule.

cheers, wayne

Piszcz, Justin wrote, in part,  on 8/25/2005 8:55 AM:

> I know I can utilize various bp* commands as well as a bpreport.pl 
> script I found in the archive mailing lists.
>
> But on a per-client basis, what is the best way to determine **when** 
> the last successful (full or incremental) backup occurred?
>