I thought I provide you a glimpse of which reports Adiscon LogAnalyser can generate. There are some interesting summary reports, like the Windows Event Log Summary Report and the Syslog Summary Report. Of course, you can customize these reports based on the usual filtering capabilities. As an example, have a look at the syslog summary report just for "today". You can play with these options life at the Adiscon LogAnalyzer demo site.
Please note that we will be working on more reports in the months to come. Also, if you miss some report, you may consider sponsoring its development. This can be quite cost-effective compared to the many quite expensive solutions you otherwise need to use -- or your programming time ;-)