Drill from analytics to replays
Every chart and table on the Analytics tab is a starting point. Click your way from a number you don't like to the specific sessions behind it.
From Top Pages
Click any row in the Top Pagestable, the whole row is a link to that page's detail view. There you'll see KPIs (visits, unique visitors, avg duration, bounce, rage clicks), a scroll-depth distribution, and the visitor flow (which pages came before, which came after).
From Top Ads and Traffic Sources
On both tables, the bounce % cell is a deep link to the matching sessions filtered to bounce = only. Use this when an ad or source shows a worrying bounce rate.
From any chart back to sessions
The Date filter at the top of the Analytics tab is shared with the Sessions tab, switch tabs and the date range follows. So looking at a spike on the sessions-over-time chart? Note the range, switch to Sessions, see exactly those sessions.
From a session back to its page
Every row in the sessions list has a small chart-icon button beside the URL. Click it to jump to that page's analytics detail. Useful when a single session catches your eye and you want to see the aggregate pattern for that page.