'ER'
(10PM, NBC)
With Pratt's shocking exit in the season premiere, the upcoming return of original cast members Anthony Edwards and Noah Wyle and ongoing rumors of George Clooney's return, 'ER' producers are making sure the show ends its 15-season run with style.

And tonight, add another major shake-up to the mix, as Maura Tierney's Abby Lockhart bids County General adieu. Unlike with Pratt's death, Abby's departure is less dramatic, as she decides to leave Chicago with her son and husband, Goran Visnjic's Luka Kovac.

Fans of Tierney needn't fret that she'll be gone from TV land for long, however; she'll play Denis Leary's love interest on 'Rescue Me' next spring.

'Democratic National Convention'
(10PM, ABC, CBS, NBC)
It all comes down to this: After months of campaigning, political mudslinging and rivalry with Hillary Clinton for the Democratic Party nomination, Barack Obama closes the DNC in Denver with an acceptance speech that will make him, officially, the Democrats' Presidential contender in November.

An extra bit of history on this night in which Obama becomes the first African-American to be a major party Presidential contender: His address to the Invesco Field attendees unfurls on the 45th anniversary of Martin Luther King Jr.'s seminal "I have a dream" speech.

Today, VH1 announced its summer schedule, replete with documentaries, events and all-new celebreality shows. So far, VH1 has only been touting its new reality competition series I Love Money, which pits cast members from Rock of Love, Flavor of Love and I Love New York against each other for a $250,000 cash prize. But, now we have the full schedule for the summer season.

After the jump, I'll tell you about the new shows...